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Our body. “A short history of nearly everything” by Bill Bryson

The building blocks of life might be the 20 elements of amino acids that combine in certain sequences to form the 700,000 kinds of proteins in our body.  The number of proteins discovered is increasing and might be in the range of one million kinds.

Hemoglobin is only a chain of 146 amino acids long, a runt by protein standards in length, and yet it offers 10 at an exponent of 190, of possible amino-acid combinations in order to have the exact sequence of the different kinds of amino acids.

To make the protein called “collagen” you need to arrange 1,055 amino acids in precisely the right sequence which means you need 1,055 spinning wheels with 20 symbols in each wheel to coincide exactly for the jack pot!

Thus, the odd that any protein was formed by hazard is nil.

Any protein cannot reproduce itself and it needs DNA, which is a whiz in replicating itself.

DNA can do nothing but replicating proteins and proteins are useless without DNA.

Are we to assume that these two organisms arose simultaneously with the purpose of supporting each other?

No atom or molecule has achieved life independently; it needs some sort of membrane to contain them so that they come together within the nurturing refuge of a cell.

Without the chemicals, the cell has no purpose.  It is little wonder that we call it the miracle of life.

Forming amino acids is not the problem because if we expose water to ammonia, hydrogen sulphide and methane gases and introduce some electrical sparks, as a stand-in for lighting, then within days you will have amino acids, fatty acids, sugar and other organic compounds.

What was needed is a process of a few of these amino acids to procreate and then cluster to discover some additional improvement.

What do we know about cells so far?

A single cell splits to become two and after 47 doublings you have 10 thousand trillion cells and ready to spring forth as a human being.  Each cell carries a copy of the complete genetic code, the instruction manual for your body, and it knows far more about you that you do, and is devoted in some intensively specific way to your overall well-being.

The human body has at least a few hundred types of cells and they vary in shape, size, and longevity; we have nerve cells, red blood cells, photocells, liver cells that can survive for years, brain cells that last as long as we live and they don’t increase from the day we are born, but 500 die every single hour, and so forth.  The components within a cell are constantly renewed so that everything in us is completely renewed every 9 years.

The outer casing of a cell is made up of lipid or light grade of machine oil but on the molecular level it is as strong as iron, then the nucleus wherein resides the genetic information and the busy space called cytoplasm. The cell contains about a thousand power plants or mitochondria that convert processed food and oxygen into ATP molecules or battery packs.

A cell would use up one billion ATP molecules in two minutes or half the body weight every day. The electrical energy activities in a cell is about 0.1 volts traveling distances in the nanometers; or when this number is scaled up it is the equivalent of 20 million volts per meter or the amount of what a thunderstorm is charged.

Each strand of DNA is damaged 10,000 times a day and swiftly repaired if the cell is not to perish by a command received from a hormone.

When a cell receives the order to die then it quietly devour its components. For example, nitric oxide is a formidable toxin in nature but cells are tremendous manufacturers of this substance which control blood flow, the energy level in cells, attacking cancerous cells, regulating the sense of smell, and penile erection among other things.

Our body contains 200,000 different types of protein and we barely understand a tiny fraction of them

Enzymes are a type of protein with tasks to rebuild molecules and marking the damaged pieces and other protein for processing. 

A cell might contain 20,000 different types of protein.

In the 1860s, Louis Pasteur showed that life cannot arise spontaneously but come from pre-existing cells.

A short history of nearly everything, by Bill Bryson  (part 4)

Eco-system

 Thomas Midgley, Junior was an engineer by training but developed an interest in the industrial applications of chemistry.  With an instinct for the regrettable that was almost uncanny, Midgley invented chlorofluorocarbon CFC that is eating our ozone layer in the stratosphere and tetraethyl lead that spread devastation to human health by killing millions from lead contamination and increasing the lead content in our bones and blood 650 times the normal dose.

Tetraethyl lead was used to significantly reduce the juddering condition known as engine knock.  GM, Du Pont and Standard Oil of New Jersey formed a joint enterprise called Ethyl Gasoline Corporation with a view to making as much tetraethyl lead as the world was willing to buy this new gasoline and introduced this product in 1923. Lead can be found in all manner of consumer products; food came in cans sealed with lead solder, water was stored in lead-lined tanks, and lead arsenate was sprayed onto fruit as a pesticide and even as part of the composition of toothpaste tubes. However, lead lasting danger came as an additive to motor fuel. 

Clair Patterson turned his attention to the question of all the lead in the atmosphere and that about 90% of it appeared to come from car exhaust pipes.  He set about to comparing lead levels in the atmosphere now with the levels that existed before 1923. His ingenious idea was to evaluate these levels from samples in the ice cores in places like Greenland; this notion became the foundation of ice cores studies, on which much modern climatological work is based.  Patterson found no lead in the atmosphere before 1923.  Ethyl Corporation counter attacked by cutting off all research grants that Patterson received.  Although Patterson was the unquestionable America’s leading expert on atmospheric lead, the National Research Council panel excluded him in 1971. Eventually, his efforts led to the introduction of the Clean Air Act of 1970 and to the removal from sale of all leaded petrol in the USA in 1986.  Lead levels in the blood of the Americans fell by 80% almost within a year; but since the atmosphere contains so much lead and cannot be eliminated and is for ever, we are to live with a new constitution of heavy lead concentration in our blood stream and our bones.  Lead in paint was also banned in 1993, 44 years after Europe has banned it.  Leaded gasoline is still being sold overseas.  Ironically, all the research on lead effects on health were funded by the Ethyl Corporation; one doctor spent 5 years taking samples of urine and faces instead of blood and bones where lead accumulate.

Refrigerators in the 1920s used dangerous gases and leaks killed more than a hundred in 1929 in a Cleveland hospital.  Thomas Midgley came to the rescue with a safe, stable, non-corrosive, and non-flammable gas called CFC.  A single kilo of chlorofluorocarbon can capture and annihilate 70,000 kilos of atmospheric ozone which is no thicker than 2 millimeter around the stratosphere and whose benefit is to capture the dangerous cosmic rays.  CFC is also a great heat sponge 10,000 times more efficient than carbon dioxide responsible for the greenhouse effect of increasing atmospheric temperature. CFC was banned in 1974 in the USA but 27 million kilos a year are still being introduced in the market in other forms of deodorant or hairspray for example.  CFC will not be banned in the third world countries until 2010.

The natural level of carbon dioxide in the atmosphere should be 280 parts per million but it has increased to 360 and is roughly rising 0.025% a year and might be around 560 by the end of the century.  The seas soak up tremendous volumes of carbon and safely locked it away.  Since the Sun is burning 25% more brightly than when the solar system was young, what keeps our Earth stable and cool?  It seems that there are trillions upon trillions of tiny marine organisms that capture carbon from the rain falls and use it to make tiny shells. These marine organisms lock the carbon and prevent it from re-evaporating into the atmosphere; otherwise, the greenhouse effect of warming the atmosphere would have done much damage long time ago. These tiny organisms fall to the bottom of the sea after they die, where they are compressed into limestone.

 Volcanoes and the decay of plants return the carbon to the atmosphere at a rate of 200 billion tones a year and fall to the Earth in rain.  The cycle takes 500,000 years for a typical carbon atom.  Fortunately that most of the rain fall in oceans because 60% of the rain that fall on land is evaporated within a couple of days. Human has disturbed this cycle after the heavy industrialization era and is lofting about 7 billion tones each year.  There is a critical threshold where the natural biosphere stops buffering us from the effects of our emissions and actually starts to amplify them.

Is our immune system still functioning properly?

In 1952, penicillin was fully effective against all strains of staphylococcus bacteria.  The US surgeon-general, William Stewart declared: “The time has come to close the book on infectious diseases. We have basically wiped out infection in the USA”. Remarkably, 70% of the antibiotics used in the developed world are given to farm animals in stock feed to promote growth or as a precaution against infection. The bacteria mutated and evolved a resistance to antibiotics and 90% of the strains developed immunity to penicillin. Only one type of antibiotics called vanomyncin remained effective.

In 1997, vanomycin failed to check a new strain.  The pharmaceutical industry hasn’t given the world an entirely new antibiotic since the1970s, preferring to produce a whole gamut of antidepressants that people take everyday for ever.  There is a process of discovery that many ailments may be bacterial in origin such as ulcers, heart disease, asthma, arthritis, multiple sclerosis, several mental disorders, many cancers, and even obesity.

Fish is no longer that abundant in the surface seas. According to one estimate, there could be as many as 30 million species living in the sea, most are undiscovered. However, the world’s seas are not uniformly bounteous.  For example, Australia has the longest coastline of 36,735 kilometers, yet it is not a fishing nation because it has no fish for lack of nutrients from the rivers that do not carry much there. In the 1970s, Australia and New Zealand discovered vast shoals of “orange roughy” at a depth of 800 meters.  The fishing fleet was hauling 40,000 tons of roughy a year.  In no time the roughy was disappearing because this type of fish was leading an unhurried lifestyle, spawning once in a lifetime, for the water was resource-poor.

Sharks are captured, the fin tail sliced off, and then dumped back to die: In the Far East, the kilo of fins is sold for $110 and a bowl of shark-fin soup retail for $100 in Tokyo.  As of 195, some 37,000 industrial-sized fishing ships, plus about a million boats, were taking twice as many fish as they had 25 years earlier.  A quarter of a fishing net contains “by-catch” that has to be dumped back, mostly dead, because they are too small or the wrong type. For every kilo of shrimp harvested, about 4 kilo of fish is destroyed.  Cod and halibut are almost extinct off the northeast coast of America.  A single lobster in the catch used to weight 9 kilos and they don’t weight one kilo presently: lobster can live up to 70 years but is not given time to mature.  Fishermen are reduced to fishing the hideous hagfish; these days, “fish” is whatever is left.  It seems that the crab-eater seals are the mammal species of large size that are the most numerous after humans and they live on the pack ice around Antarctica. 

Earth Atmosphere

Without our atmosphere that extends 190 kilometers, Earth would be a ball of ice averaging minus 50 degrees Celsius.  Altogether, the gaseous padding is equivalent to 4.5 meters of protective concrete.  The immediate layer is the troposphere that represents 80% of the atmosphere mass and contains water vapor and oxygen; it is 16 kilometers’ thick at the equator and around 11 kilometers in the temperate climates. 

The crowding of atoms in the troposphere and, although they travel at the speed of 8 millionths of a centimeter, their collisions provide enough warmth for our survival.  Human can live to altitude around 4,500 meters by developing large chests and lungs and increasing the density of oxygen-bearing red blood cells by a third but we are not made for high altitudes. At an altitude of over 6,000 meters every step demands a colossal effort of will. The temperature drops about 1.6 degrees with every 1,000 meters you climb; around an altitude of 10,000 the temperature reaches minus 57 degrees.  A rise of an inch in the barometer represents half a ton of air piled upon us; the reason we don’t feel crushed is that our body is almost of water that is not compressible.  Only 0.035% of the Earth’s fresh water is floating around as cloud soaked water vapor.

The next layer is the stratosphere then the mesosphere and then the ionosphere or thermosphere where temperature reaches 1,500 degrees Celsius.

The rejuvenating processes on Earth

Huge amount of heat, energy and electricity are created and transferred around the globe every second. A single thunderstorm contains an energy equivalent to 4 days use of electricity for the whole USA.  At any moment an average of 1,800 thunderstorms are in progress around the world. Day and night about 100 lightning bolts hit the ground every second. A typical weather front may consist of 750 million tons of cold air pinned beneath a billion tons of warmer air; the strength of wind grows exponentially so that a wind blowing at 300 kilometers an hour is 100 times stronger than 30 kilometers per hour wind. Thus, a tropical hurricane can release in 24 hours as much energy as France uses in a year.

Air always flows from areas of high pressure coming from the equator to areas of low pressure to keep pressure in balance. Moist and warm air from the equator rises until it hits the barrier of the troposphere and spreads out. As it travels away and cools, it sinks. When it hits bottom, some of the sinking air looks for an area of low pressure to fill and then heads back for the equator, completing the circuit through convection. This convection process is explained by the Coriolis effect that results from the fact that Earth spins at 1,675 kilometers an hour at the equator but the spin reduces its velocity as it is closer to the poles to become almost negligible; a straight line seems to curve to the right at the north hemisphere and to the left at the southern hemisphere.  The Coriolis effects sends hurricanes spinning off like tops.

The other current that is the main agent of heat transfer is known as thermohaline circulation.  For example, England and Ireland are very lucky that the Atlantic is more saline than the Pacific; the denser saline water sink at the bottom, and aided by the Coriolis effect, huge amount of warm water are charred by the Gulf Stream to warm the weather and keep many part of Western Europe from becoming icy like Canada and Russia. 

As the water of the Atlantic gets to the vicinity of Europe, it grows denser and sinks to great depths and begins a slow trip back to the southern hemisphere.  When they reach Antarctica, they are caught up in the Antarctic Circumpolar Current and driven onward into the Pacific.  This process takes 1,500 years for water to travel from the North Atlantic to the mid-Pacific, but the volume of heat and water they move are very considerable and the influence on the climate is enormous.  Unfortunately, with the increase of the greenhouse effect the higher melting rate of the Greenland ice is diluting the Atlantic Ocean and could disrupt the cycle disastrously.

Earth experienced many periods of Ice Age; we are in one Ice Age but within a period of a warmer one.  Just figure an ice sheet 800 meter thick and many kilometers long and wide progressing at 150 meters a year; no obstacles can resist the progress of this monster ice sheet; boulders are carried away and placed at mountain tops and many islands were thus attached to mainland such as Cape Code, Long island, and Nantucket in the east of the USA. 

The Swiss Natural History professor Louis Agassie borrowed that idea from his colleague Jean de Charpentier and then toured the world lecturing his theory and traveling and climbing the craggiest Alpine peaks.  The USA was the homes that embraced his idea and offered him a chair in Harvard and build him a first-rate Museum of Comparative Zoology.

The cause of ice age starts in cool summers that prevent snow to melt in the poles and incoming sunlight bouncing off by the reflective surface and thus, exacerbating the cooling effect and encouraging more snow to fall and stick.  It is not necessarily the amount of snow that causes ice sheets but the fact that snow is lasting.  The process is self-enlarging and unstoppable.

The last chapter of “A short history of nearly everything” by Bill Bryson described how Man came to exist 100,000 years ago; modern human is so recent on Earth that the genetic differences among 55 chimpanzees are much larger than the whole human species.

Yet, modern human has managed to damage extensively Earth, its environment, and thousands of species in such a short period. Apparently, human activities are causing more than one thousand species to go extinct per week.  The nineteenth century, especially in the USA and Britain, experienced a deliberate wiping out of any animal species that was not considered a pet such as animals living in farms. 

The States in America paid out bounties for eastern mountain lions and other pests. The dodo flightless bird was wiped out from the island of Mauritius in 1693 simply because the ship crews needed to have something to do.  In the USA thirty genera of very large animals disappeared; ten million mammoth carcasses are thought to be frozen in the Siberian tundra.  A walrus-like creature called Steller’s sea cow, 9 meters in length and weighting 10 tones got extinct in the mid 18th century. The golden head and emerald green Carolina parakeet was wiped out because it was considered a pest by farmers. The dog-like Tasmanian tiger was wiped out in Australia by 1936.

I generated two articles from that manuscript: “A version of the genesis of Earth and Man” and “What animal instincts do they fear in me?”

“A short history of nearly everything” by Bill Bryson, (part 2)

How living organisms were created?

 Earth had no oxygen in its environment when it was created.  Cyanobacteria or algae break down water by absorbing the hydrogen and released the oxygen waste which is actually a very toxic element to every anaerobic organism; our white blood cells actually use oxygen to kill invading bacteria.  This process of releasing oxygen is called photosynthesis, undoubtedly the most important single metabolic innovation in the history of life on the planet. 

It took two billion years for our environment to accumulate 20% of oxygen because oxygen was absorbed to oxidize every conceivable mineral on Earth and rust it and sink it in the bottom of oceans. 

Life started when special bacteria used oxygen to summon up enough energy to work and photosynthesize. Mitochondria manipulate oxygen in a way that liberates energy from foodstuffs and they are very hungry tiny organisms that a billion of them are packed in a grain of sand.  Mitochondria maintain their own DNA, RNA and ribosome and behave as if they think things might not work out between us.  They look like bacteria, divide like bacteria and sometimes respond to antibiotics in the same way bacteria do; they live in cells but do not speak the same genetic language.  

The truly nucleated cells are called eukaryotes and we ended up with two kinds of them: those that expel oxygen, like plants, and those that take in oxygen, like us.  Single-celled eukaryote contains 400 million bits of genetic information in its DNA, enough to fill 80 books of 500 pages.  It took a billion years for eukaryotes to learn to assemble into complex multi-cellular beings.

Microbes or bacteria form an intrinsic unit with our body and our survival.  They are in the trillions grazing on our fleshy plains and breaking down our foodstuff and our waste into useful elements for our survival; they synthesize vitamins in our guts, convert food into sugar and polysaccharides and go to war on alien microbes; they pluck nitrogen from the air and convert it into useful nucleotides and amino acids for us, a process that is extremely difficult to manufacture industrially. 

Microbes continue to regenerate the air that we breathe with oxygen.  Microbes are very prolific and can split and generate 280 billion offspring within a day; once every million divisions they produce a mutant with a slight characteristic that can resist antibodies.  The most troubling is that microbes are endowed with the ability to evolve rapidly and acquire the genes of the mutants and become a single invincible super-organism; any adaptive change that occurs in one area of the bacterial province can spread to any other. 

Microbes are generally harmless unless, by accident, they move from a specialized location in the body to another location such as the blood stream, for example, or are attacked by viruses, or our white blood cells go on a rampage.  Microbes can live almost anywhere; some were found in nuclear power generators feeding on uranium, some in the deep seas, some in sulfuric environment, some in extreme climate, and some can survive in enclosed bottles for hundred of years as long as there is anything to feed on.

Viruses or phages can infect bacteria. A virus are not alive, they are nucleic acid, inert and harmless in isolation and visible by the electron microscope; it barely have ten genes; even the smallest bacteria require several thousand genes..  But introduce them into a suitable host and they burst into life.

Viruses prosper by hijacking the genetic material of a living cell and reproduce in a fanatical manner.  About 5,000 types of virus are known and they afflict us with the flu, smallpox, rabies, yellow fever, Ebola, polio and AIDS.  Viruses burst upon the world in some new and startling form and then vanish as quickly as they came after killing millions of individuals in a short period.

There are billions of species and tropical rainforests that represent only 6% of the Earth surface harbor more than half of its animal life and two third of its flowering plants. A quarter of all prescribed medicines are derived from just 40 plants and 16% coming from microbes.  The discovery of new flowery plants might provide humanity with chemical compounds that have passed the “ultimate screening program” over billions of years of evolution.

The tenth of the weight of a six years pillow is made up of mites, living or dead, and mite dung; low temperature washing just get the lice cleaner!

 Water is everywhere. A potato is 80% water, a cow 74%, a bacterium 75%, a tomato at 95%, and human 65%.  Most liquid when chilled contract 10% but water only 1%, but just before freezing it expands.  When solid water is 10% more voluminous, an utterly bizarre property which allow ice to float, otherwise ice would sink and oceans would freeze from the bottom. 

Without surface ice to hold heat in, the water warmth would radiate away and thus creating more ice and soon oceans would freeze.  Water is defying the rules of chemistry and law of physics.  The hydrogen atoms cling fiercely to their oxygen host, but also make casual bonds with other water molecules, thus changing partners billions of times a second and thus, water molecules stick together and can be siphoned without breaking but not so tightly so that you may dive into a pool.  Surface water molecules are attracted more powerfully to the like molecule beneath and beside them than to the air molecule above so that it creates a sort of membrane that supports insects.

All but the smallest fraction of the water on Earth is poisonous to us because of the salts within it.  Uncannily, the proportions of the various salts in our body are similar to those in sea water; we cry sea water, and we sweat sea water but we cannot tolerate sea water as an input! Salt in the body provoke a crisis because from every cell, water molecules rush off to dilute and carry off the sudden intake of salt.  The oceans have achieved their present volume of 1.3 billion cubic kilometer of water and it is a closed system. 

The Pacific holds 52% of the 97% of all the water on Earth.  The remaining 3% of fresh water exist as ice sheet; Antarctica holds 90% of the planet’s ice, standing on over 2 miles of ice.  If Antarctica is to completely melt the ocean would rise about 70 meters.

“A short history of nearly everything” by Bill Bryson (written on September 25, 2007)

This is a voluminous book of 575 pages that describes and explains the scientific achievements that tried to comprehend Earth and the life processes.

I will try to summarize the discoveries chronologically, each discipline taken separately such as physics, chemistry, and geology and so forth.  It is a long undertaking but it would be useful for me in this assimilation process and quick review of science on the march, to explain, and to conquer.

The manuscript is divided into 6 parts: lost in the Cosmos, the size of the earth, the new age, dangerous planet, life itself, and the road to us.  I am including a few quotations of scientists that preface each main part.

Hans Christian von Baeyer in “Taming the atom“: “The physicist Leo Szilard announced to Hans Bethe that he was thinking of keeping a diary: “I don’t intend to publish.  I am merely going to record the facts for the information of God”   Bethe asked him: “Don’t you think God knows the facts?”   Szilard replied: “God knows the facts, but not this version of the facts

The Astronomer Geoffrey Marcy describing the solar system: “They’re all in the same plane. They’re all going around in the same direction.  It’s perfect, you know.  It’s gorgeous. It’s almost uncanny”.

Alexander Pope in an epitaph intended for Sir Isaac Newton: ” Nature and nature’s laws lay hid in night; God said: “Let Newton be!” and all was light”

An anonymous: “A physicist is the atoms’ way of thinking about atoms”

The British geologist Derek V. Alger: “The history of any one part of the Earth, like the life of a soldier, consists of long periods of boredom and short periods of terror”

Freeman Dyson: “The more I examine the universe and study the details of its architecture, the more evidence I find that the universe in some sense must have known we were coming”

Remark of the wife of the Bishop of Worcester after Darwin’s theory of evolution was explained to her: “Descended from the apes! My dear, let us hope that it is not true, but if it is, let us pray that it will not become generally known”

Byron in “Darkness”: “I had a dream which was not all a dream

The bright sun was extinguish’d, and the stars

Did wander…”

Lonely planet

Earth is not the easiest place to be an organism, even if it is the only place in our nearest galaxies.  The portion of land mass or continental area we are able to live in is only about 12% because we are not adaptable to hot or very cold weather.  Apparently, the most recent super volcano eruption occurred at Toba in Northern Sumatra, about 74,000 years ago and almost annihilated human kind; maybe a thousand human survived, which account for the lack of our genetic diversity.

Greenland ice cores show that the Toba blast was followed by at least six years of “volcanic winter” and many poor growing seasons after that.  There are currently 13 active super volcanoes and Yellowstone in the USA is the only continental one.  Yellowstone is estimated to erupt every 600, 000 years and is ready for another of his monstrous feat; the last eruption was estimated to spew enough ash to bury the State of California under 6 meters of ash; ash covered the whole western states of the USA and a large part of Canada.

We belong to the portion of living things that decided 400 million years ago to crawl out of the sea and become land-based and oxygen-breathing creatures.  We abandoned the vast seas for a more restricted area with the advantage that we can climb over 7000 meters and live at very high altitude while the feat of the Italian Umberto Pelizzari recorded 72 meters under water.  We cannot bear the pressure of the water; for every 10 meters of depth we add one atmosphere.

A few professional divers, aided by weight to descend up to 150 meters, their lungs are compressed to the dimensions of a Coke can.  Since our body is mostly water and water cannot be compressed by water, it is the gases in our body that is fatal in the depths.  At a specific depth, Nitrogen in our system starts to bubble and enter our blood stream and obstruct the tiny blood vessels, depriving cells of oxygen.

Human technology was able to send a diving vessel to the deepest point in the Mariana Trench in the Pacific at 11.3 kilometers down; they discovered a type of crustacean similar to shrimp but transparent.  There are particular microbes that strive in water at temperature over 70 degrees Celsius.

Observers have identified two dozen fortunate breaks we have had on Earth to create the living organism.  If the Sun was larger it would have exhausted its fuel before Earth could be formed because the larger the star the more rapidly it burns.  If we were two light minutes closer to the Sun we would be like planet Venus that cannot sustain life; Venus surface temperature is 470 degrees Celsius and all its water has evaporated driving hydrogen away into space.

If we were 1% further from the Sun we would be like frozen Mars. If our core didn’t contain molten liquid we would not have magnetism to protect us from cosmic rays.  If our tectonic plates didn’t collide to produce more gases and continually renew and rumple the surface with mountains then we would be under 4,000 meters of water.

If our moon was not large enough, one fourth the size of Earth, then Earth would be wobbling like a dying top with unstable climate and weather. It is to be noted that the Moon is slipping away at a rate of 4 centimeters a year, relinquishing its gravitational hold.  If comets didn’t strike Earth to produce the Moon or asteroid to wipe out the Dinosaurs or if we didn’t enjoy enough stability for a long time human would not be what they are.

Earth contains 92 naturally occurring elements and barely 6 of them are of central importance to life.

Of every 200 atoms in our body, 126 are hydrogen, 51 are oxygen, 19 are carbon, 3 are nitrogen and the remaining atom is divided among all the other elements such as iron to manufacture hemoglobin, Cobalt for the creation of vitamin B12, Potassium and Sodium for the transmission of electrical charges in the nerves, Molybdenum, manganese and vanadium to keep the enzymes purring and Zink to oxidize alcohol.

Oxygen is the most abundant element on Earth crust of about 50%, then silicon, and aluminum the fourth.  Carbon is only the 15th most common element or 0.05% of Earth crust, but is the most promiscuous since it adheres to almost every atom and holds extremely tight, and is the very trick of nature to build proteins and DNA.

What we marvel at is not that Earth is suitable to life but that it is suitable to our life.  A big part that Earth seems so miraculously accommodating is that we evolved to suit its severe conditions.  When elements don’t occur naturally on earth, like plutonium, we have evolved zero tolerance for them.  Selenium is vital to all of us but is toxic at a little higher level; even tiny dozes of arsenic, lead, copper and other natural elements we have managed to tolerate but industrialization is not allowing the natural tolerance process in evolution to absorb these huge amounts of noxious elements in our artificial environment.

The building blocks of life might be the 20 amino acids that combine in certain sequences to form the 700,000 kinds of proteins in our body; the number of proteins discovered is increasing and might be in the range of one million kinds.

Hemoglobin is only a chain of 146 amino acids long, a runt by protein standards in length, and yet it offers 10 at an exponent of 190 possible amino-acid combinations in order to have the exact sequence of the different kinds of amino acids.

To make the protein called “collagen” you need to arrange 1,055 amino acids in precisely the right sequence which means you need 1,055 spinning wheels with 20 symbols in each wheel to coincide exactly for the jack pot! Thus, the odd that any protein was formed by hazard is nil.

Any protein cannot reproduce itself and it needs DNA, which is a whiz in replicating itself.

DNA can do nothing but replicate proteins and proteins which are useless without DNA.  Are we to assume that these two organisms arose simultaneously with the purpose of supporting each other?

No atom or molecule has achieved life independently; it needs some sort of membrane to contain them so that they come together within the nurturing refuge of a cell.  Without the chemicals, the cell has no purpose.  It is little wonder that we call it the miracle of life.  Forming amino acids is not the problem because if we expose water to ammonia, hydrogen sulphide and methane gases and introduce some electrical sparks, as a stand-in for lighting, then within days you will have amino acids, fatty acids, sugar and other organic compounds.

What was needed is a process of a few of these amino acids to procreate and then cluster to discover some additional improvement.

What do we know about cells so far?

A single cell splits to become two and after 47 doublings you have 10 thousand trillion cells and ready to spring forth as a human being.  Each cell carries a copy of the complete genetic code, the instruction manual for your body, and it knows far more about you that you do, and is devoted in some intensively specific way to your overall well-being.

The human body has at least a few hundred types of cells and they vary in shape, size, and longevity; we have nerve cells, red blood cells, photocells, liver cells that can survive for years, brain cells that last as long as we live and they don’t increase from the day we are born but 500 die every single hour, and so forth.  The components within a cell are constantly renewed so that everything in us is completely renewed every nine years.

The outer casing of a cell is made up of lipid or light grade of machine oil but on the molecular level it is as strong as iron, then the nucleus wherein resides the genetic information and the busy space called cytoplasm. The cell contains about a thousand power plants or mitochondria that convert processed food and oxygen into ATP molecules or battery packs.

A cell would use up one billion ATP molecules in two minutes or half the body weight every day. The electrical energy activities in a cell is about 0.1 volts traveling distances in the nanometers; or when this number is scale up it is the equivalent of 20 million volts per meter or the amount of what a thunderstorm is charged.

Each strand of DNA is damaged 10,000 times a day and swiftly repaired, if the cell is not to perish by a command received from a hormone. When a cell receives the order to die then it quietly devour its components. For example, nitric oxide is a formidable toxin in nature but cells are tremendous manufacturers of this substance which control blood flow, the energy level in cells, attacking cancerous cells, regulating the sense of smell, and penile erection among other things.

Our body contains 200,000 different types of protein and we barely understand a tiny fraction of them. 

Enzymes are a type of protein with tasks to rebuild molecules and marking the damaged pieces and other protein for processing. 

A cell might contain 20,000 different types of protein.

In the 1860s, Louis Pasteur showed that life cannot arise spontaneously, but come from pre-existing cells. 

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