Earthlings Letter #10 – The Earth’s Atmosphere

Jeff & Susan • June 12, 2016

Greetings Earthlings!

I promised to talk more about our earth’s atmosphere in this letter. This is a huge subject and I will write only about one tiny bit of it so you might get interested and, I hope, want to find out more. I am like the Pied Piper leading you here and there to this and that. But you are the ones that choose. You will know what holds your attention and gets you curious.

Scientists have named 6 layers of our atmosphere; the Troposphere (starting on the ground and rising 5 to 9 miles up), the Stratosphere ( rising 31 miles from the top of the Troposphere), the Mesosphere (rising 53 miles from the top of the Stratosphere), the Thermosphere (rising 372 miles from the top of the Mesosphere), the Ionosphere (a band of electrons that is effected by the sun), and the Exosphere (6,200 miles from the top of the Thermosphere).

A drawing of the different layers of the earth
A drawing of the different layers of the earth

Enough similarities within and differences between these layers were found, so they needed to be named separately. Scientists section off large systems they are studying, into manageable chunks so that they can study them with out going nuts!

Here is how it works. Doing science can be like cleaning your room. You can get frustrated and confused by the complexity of the job. (depending on how messed up your room is…)

A drawing of a messy room with the words oh my

Scientists who try to find what is true about physical things around us can get just as frustrated by the task they face, because living presents us with endless things to try to understand. A big system has to be broken down into manageable bits. It is easier to concentrate on cleaning up one part of the mess ( like putting all the toys in a box) at a time.

A drawing of a girl sitting on top of a box filled with toys

This is why scientists specialize. They choose some part of a larger subject like, orange moths with black spots, out of a study of all the billions of insects in the World.

A child 's drawing of a girl holding flowers and butterflies

There are good things and not so good things about doing science in this way. At lot can be learned in great detail about a particular animal or plant or rock… but by concentrating so narrowly the larger picture of how this item of interest effects it’s environment and other creatures around, can be lost. And this is something we don’t want to loose sight of! A good scientist will try to keep seeing with “wide eyes”. They will not loose the larger picture in the details. I am sure you have heard the saying “You can’t see the forest for the trees.”

A drawing of a boy standing next to a tree with the words wow nice tree written below it.

A writer named John Steinbeck once wrote this about the practice of scientific research, “ …we were determined not to let a passion for unassailable little truths draw in the horizons and crowd the sky down on us.”

A research scientist studies one part of a large natural system in great detail then moves on to the next part to study. Then she or he looks to see how the parts or layers interact with each other and finally thinks of an hypothesis. An hypothesis is defined as “ an explanation based on limited evidence” or “a starting point for further investigation”. This word comes from the Greek word, hupothesis , meaning ‘foundation’. The beginning of the word, hupo , means ‘under’ and the end of the word, thesis, means ‘placing’. This is roughly how we try to understand our physical reality. We recognize that we don’t have all the information but we make up an explanation from what we know. There is always more to discover and learn about physical things. This may not be the best way or the only way to find things out but it has taught us a lot of stuff, so far. Some of the things we have learned may in the future be found wrong. But a curious person (which is what a scientist is and what you are) does not mind being wrong because that opens up other things to be curious about and this is where the fun lies!

What is physical? What do we mean when we talk about physical things? Physical things are those things that we experience through our senses – hearing, sight, touch, taste and smell. When someone is talking about a physical thing they use words like; solid, real, actual, visible, sour, smoky, loud, bright, soft… I’m sure you can make a list of many more words that describe physical things. The original word in Latin, physica , means ‘things relating to nature’. And we know that nature is all around us and is our environment on Earth and that it is very physical!

I bet you thought we would never get back to our Earths atmosphere! We’re back. Atmosphere is one of Earths very large natural systems. Other large ones would be the oceans and waterways, the rocks and soil (which we thought about in the first EL), and the gravitational system. But let’s not get too many things out of our box of natural wonders. We don’t want to get overwhelmed! Or go nuts! The first layer of the thin envelope that surrounds Earth that we call atmosphere is the Troposphere, the layer that makes all our weather and rises from the ground up about 5 to 9 miles. This is the one with all the clouds. We can see it above us and stand under it where ever we live on Earth.

Clouds appear to us in different forms. Some names of their formations are; Cumulus, Stratus, and Cirrus.

A drawing of an egg with the word stratus written on it

These formations develop when certain kinds of temperature, moisture, altitude (the hight of an object in relation to the ground) and wind speed are present. If there is a lot of moisture in the air and the temperature rather warm then Cumulus clouds will start to form. The word Cumulus means, in Latin, to pile or accumulate. Cumulous clouds are clouds that ‘pile up’ on one another. You have seen them, they are white cottony mounds that become grey when they are about to rain on us. When cumulus clouds are white and puffy, rain is not going to happen right away. When they become grey then it will rain soon. A grey cloud is saturated (holding as much water as it possible can) the drops inside it are heavy and ready to fall. But why does the cumulus cloud turn grey? A cumulus cloud grows thicker and denser as it gathers fat water droplets. The thicker and denser it gets, less light is able to pass through it. It is no longer bright white and slightly see through. A cloud is grey or black because it is so dense that no light gets through. Try to think of it this way… you are seeing the ‘shadow’ of the cloud. Just like your body blocks light and you cast a shadow on your ‘dark side’.

How do rain drops form? The suns heat causes evaporation (when liquid changes to gas) of moisture from the ground and the heated/moist air rises (because warmth rises) carrying the water vapor upward to meet the cooler air higher up (cold air waits up high and presses downward). Tiny particles like dust, smoke and salt are also carried upward by the warm moist air and wind currents. These particles are important for the formation of raindrops. Moisture is drawn to a tiny particle and wraps itself around it, sticking to it and forming a drop of water. This is called condensation (warm/moist vapor that collects on the cool surface of a particle and becomes liquid). Drops of water are drawn to each other. Water is sticky! The larger ones “eat’ the smaller ones. When enough of them gather you see them as a cloud. Finally they get so heavy that gravity (the force that attracts any physical thing to the Earth) drags on them and they rain down onto the ground.

You can see the action of water droplets drawing together when it rains lightly onto a car window and you are inside looking out through the droplets. A child 's drawing of a girl looking out of a window.

Suddenly you see two drops join together to make a fatter drop. If you watch closely you will see that larger drops draw in the smaller drops. Cohesion ( this means that water molecules are attracted each other) draws these drops together and they coalesce (come together and form one mass), then run away off the window!

Water molecules are attracted to each other and create surface tension. They draw so tightly toward each other that they can form the strongest and most efficient form in nature, a sphere. You can do a simple experiment and see surface tension. Fill a glass to the very rim with water then carefully add drop by drop of water to that same glass. You will find that you are able to fill the glass above the rim of the glass! The water will form a domelike shape above the rim.

A drawing of a glass with the word cohesion written on it

You are seeing the cohesion between the water molecules, the attraction between them that pulls and creates tension on the surface Try carefully placing a fine sewing needle on the water dome you created. If you do it very gently and place it without breaking the surface, it will float! Also, you have probably noticed when you visit a pond that there are water beetles and spiders and skimmers that ‘walk’ on the surface of the pond.

A drawing of a bug in a bubble with arrows pointing in different directions.

They are moving about on the surface tension created by the strong attraction of water molecules to each other. How is this similar to the action of gravity? Is it similar? Do we know yet? Something to think about…

Water, what is it? Why does it flow? Why does it take on the shape of any container you pour it into? Water is very interesting stuff. It seems magical compared to solid things and gasses. Water and other liquids are a transitional form between solids and gases and let us actually see changes that turn one physical thing into another.

I was watching a river flowing the other day and suddenly I realized I was actually watching Earth going about it’s ‘business’. In front of my eyes it was operating like a magnificent machine that can rejuvenate and reinvent itself. A machine that lives and supports life. Our Earth doing its work.

A drawing of a waterfall in a green circle.
June 15, 2026
Returning to Caron, Philippines. Several miles off shore, while passing the Island of Borneo, we observed a surreal sight. Stationary skeletal structures on the horizon, some of them with flames shooting from a long up tilted pipe, like a dragon breathing fire. These were oil derricks 30 or more miles from the coast of Brunei burning off natural gas, a volatile by-product of oil drilling. They come into view, are left behind, and new ones appear, as we progress. At least 30 derricks paralleled our course. Normally there is nothing to see except an occasional container ship. So this is exciting. I read that there are at least 200 of them in this vicinity. Also, some have been decommissioned and made into marine habitats, (dismantled and sunk), by the Brunei government who deploys and maintains these derricks. They are a major exporter of oil and share the Island of Borneo with Malaysia and the Philippines. This experience of observing oil drilling activities during an oil crisis feels a bit surreal.
June 8, 2026
The approach to Coron, Philippines. Mountains all around, some narrow cream colored strips of beach. Single person open boats drift here and there, some are paddled. The larger colorful outrigger boats glide by like water spiders, leaving no wake. Clouds have bunched and swelled above the land taking up a lot of the sky blue sky. This is the rainy season. Our ship is drifting slowly. We are not expected at port for a while. The opening of the harbor is in sight and a green entrance marker is visible.
June 8, 2026
In its present form, Capitalism cannot easily fix the ongoing problems of its own making. It has become an economic formula for much of World commerce. Its empowerment of the often unrestrained pursuit of profit, guided by the optional moral consciences of some individuals, businesses and nations has allowed for broad interpretation resulting in vast destructive behavior. We have been able to personally visit about forty countries during more than a year of continuous travel. Our goal is to complete one circumnavigation within another two years. This trip has developed into a unique opportunity to research World economies. Which was our hope at the onset. We are now in Southeast Asia and it is possible to make a few observations. The opening of ‘free markets’ with Capitalism worldwide has become a modern form of Colonialism. Countries that are thriving go into developing nations with the huge advantage of currency value and technological superiority. They essentially locate in each country resources that can be monetized and profit made, hire employees for less than they can in their home countries, then take the majority of the profit out of the host country. This dramatically changes the existing natural balance in most of these developing countries and thrusts them into the financially unbalanced world of free market capitalism for which they are not prepared and have no immunity. Where we have traveled so far, many developing countries are turned into tourist attractions and the young people are mostly encouraged to aspire to ‘hospitality’ work, keeping their expectations low. The following is a short summary of how Capitalism has evolved in recent history. People have benefited for many hundreds of years from the innovation and competition inherent in the practice of Capitalism. But now the symptoms of its flaws are obvious and too damaging to ignore. When Capitalism fails from its own weaknesses it can, in its final form, become fascism; dictatorial power, militarism, an autocracy that crushes opposition. It makes a few people very rich and creates a dictator to protect their wealth and influence resulting in an ultra nationalist state. When a country is completely invested in Capitalism, like the US, it must constantly monitor its military and financial power in the World. Looking back; the US petro dollar was established during the 1973 energy crisis by Nixon/Kissinger, in order to keep the US dollar strong next to other currencies. Controlling the high value of a nation's currency is essential for Capitalism to thrive and it was clear that oil was the blood of World economies. Arab oil traded for dollars in exchange for US military protection was the deal with the Saudi government. Because oil energy is a major labor saving device and creates exponential productivity and wealth, trading dollars for oil made the US Dollar the “preferred currency” and kept its value high. In 2024 the agreement with Saudi Arabia expired because the US could no longer protect Arab nations militarily. Also the rise of renewable energies challenged oil supremacy. One of Capitalism’s characteristics is to concentrate wealth in the hands of a few and encourage profit making over stabilization of a good quality of life for the rest of humanity. Over emphasis on profit making has suppressed education, healthcare and general dignified survival wherever it dominates. Wealth is not a barometer of intelligence or happiness. It is an advantage in Capitalist societies that opens opportunities in education and business. All it takes is a few powerful people to keep Capitalism going, apparently the richest 10% of the World population. That Capitalism has lasted so long is in part a testimony to its ability to keep adapting and improving on its least attractive strengths: control over the means of production, control over the value of currencies, amorality, exploitation, and a powerful military. Capitalism is presently a pervasive economic belief system and acts as a powerful temptation and World influence. Its social impact is on par with Communism, Democracy, Religiosity, Socialism, Liberalism, Conservativism, etc. This has again been made clear by the present oil/food crisis, created by the US/Israel attack on Iran that resulted in Iran closing the Strait of Hormuz. (Was this war a move on the part of the US to control oil and keep the USD strong?) This situation may already be worse than the energy crisis in the 70’s that created the US petro dollar. The World population is larger and more interconnected economically than ever before, making this oil shock even more damaging than the one in the 70’s. Oil is a valuable fair trade commodity. Its locations and price are controlled by a handful of companies and nations. (A common characteristic of Capitalism.) This essential energy source is centralized and vulnerable. The World economic system is in shock and being held hostage to the flow and price of oil. But this time there is a competitor for preferred currency, China's Yuan. Humans have become, over approximately 500 years, adapted to Capitalism. It feels inevitable, no matter what it destroys. It has captured the popular imagination like a religion. But unlike religions it encourages people to cast aside concerns of morality and the fate of humanity. Its symptoms and failures are explained away as the evils inherent in humanity or individual failures. But religions have shown they can evolve. Economics can evolve also. Like the worm of Protestantism that entered the apple of Catholicism, maybe there is a pest that can invade the Capitalist feeding frenzy. This pest could be in the form of a Parallel Currency, that would create, in time, a hybrid World economy dedicated to the dignified survival of all humanity. Any nation or state could introduce a Parallel Currency to be used next to existing currency. A currency printed to provide a base for humanity; the essential needs of life; food, shelter, education and healthcare. Not freedom, not security, but what comes before humanity can have either of these things, survival. Life long access to food, shelter, healthcare and education. There is enough. Basic needs are the least expensive and most abundant things a nation can provide its citizens. The Parallel Currency is a way to pay for it. A few countries are already trying to do this with their tax structures and laws, but a Parallel Currency would do it without taxation or inflation. With a stroke of a pen it can be initiated. It is a separate currency that can only be used for basic needs; their creation and distribution and is destroyed when it reaches a bank so it won't create inflation. It also will not inhibit the positive capabilities of existing currencies. They will function normally. The Parallel Currency would be a closed loop created for dignified human survival. A form of this is already used by the major developed nations to supply and sustain their large militaries. You are provided food, shelter, education and healthcare as long as you are employed by the military. China has built, in its isolation, a successful hybrid of Capitalism and Socialism controlled by its Communist government. In approximately 40 years they have brought their massive population out of poverty and become one of the most technologically advanced nations on the planet. Freedom of speech, freedom of religion are not enough. A government by the people, for the people, must also guarantee freedom from starvation, homelessness, and freedom from ignorance and curable illness. All things for which we have, as a human species, developed remedies. This is the overarching injustice of Capitalism. That these remedies exist and have been largely made possible by Capitalism but are not shared with all humanity. People have evolved beyond the war response to disagreements, but governments have not. By eliminating the tensions created by economic inequality with a Parallel Currency dedicated to providing survival needs Worldwide it is possible to see a new way. It is our responsibility to help economics and governments evolve with us. Susan Caumont Renew the Earth, renewthe-earth.org
May 18, 2026
They have only recently become independent; 2002. The struggle and tragedy of this objective still vibrates in the air and has left scars. Poverty, deteriorating roads and sidewalks, buildings and ambitions. In the intense heat of the day, most shops can't afford to have or to turn on air-conditioning. A large tree shaded park where an unchained warrior statue shouts to the sky, is heavily used by all ages.
May 8, 2026
Our arrival on the island of Waingapo is welcomed with a red carpet. The carpet leads expectantly to where several men wait, holding 11” by 14” laminated photo narratives of tours they can take you on and tell you about with three word comments in English. Past them chairs, also covered in red, have been set up under an awning for our “dignitaries.” Beside these are a few tables with souvenirs. Several young boys wait on either side of the red carpet to perform for the passengers as they disembark. Many local people are also waiting in the growing heat for the Exodus of the passengers. Ours may be the first cruise ship that has stopped at their island. One passenger finally emerges and avoids the carpet and the boys. They are shocked. Eventually a group does come out together and allow themselves to be greeted and entertained. They have selfies taken with the boys. Then return to walking and looking into the screens of their phones, bowed over them like they are praying After exiting the port area there is a long walk through parked cars, trucks and taxi drivers out to the crumbling asphalt of the main road. It is lined with vendors, a gauntlet of drinks and snacks. A ferry is unloading, people and motorcycles are streaming out. These are the customers the vendors are waiting for. A large number of motorcycles are parked on either side of the road waiting for their owners. We make our way between the crowds of people and vehicles to the hot uphill slope of the road that goes somewhere, which is hidden from sight by bunches of dark green trees. Shortly we are defeated by the heat and start back. Access to other parts of the island that are considered appropriate for tourists require a taxi, negotiations for price and where it will go. Generally we try to avoid this and are most interested in what we can observe and who we can meet by walking. We talk to a motorcyclist on our way back who says he has access to local Royalty. Jeff describes the Parallel Currency concept to him and gives him our website card. I am also able to pick up some interesting scraps of paper from the garbage that lines the road. I use their patterns and color to create abstract images on postcards I make to send to friends and family. In the end this has turned out to be a very satisfactory walk. There are very few palm trees here, which is remarkable. A different ecosystem than Bali. The mountains are low, flat topped and shelved. They define the spine of the island. Bunches of dark green trees patchwork the slopes getting denser as they approach the water. The water is blue/green and clear, fishing boats are high prowed and the smaller boats have outriggers made of bent PVC tubing. It is now early evening and the sun is low. I am walking around the outside deck of our ship taking in the 360 degree view and the sounds. On the starboard side a band is playing on shore and a singer starts up a contemporary tune. As I round the bow a chant drifts through the dusk, the Muslim evening prayer. This dominates the port side then at the stern blends with the music on shore, which dominates on the starboard side. Round and round as I walk they alternately blend and retreat, blend and retreat. I notice as I look out over the port side that the tide has gone out and long flats of seaweed, rocks and soil are exposed. People have walked out onto these surfaces to harvest edible sea life, gathering them into plastic buckets and bags. I feel like I am watching history.
May 4, 2026
We dock at the port of Bali. It is too hot and far to walk anywhere, so we hired a taxi driver for the day and invited our friend Wido to come with us. He is Indonesian, his home is in Jakarta and this is his first visit to Bali. Indonesia is a country of 17,508 islands. There is a governor on each one who communicates with the central government. Few Indonesians have visited every island. What strikes me immediately as our driver, Budi, finds his way through the dense traffic, is the careful weeding of the center island between opposing lanes. This is exceptional because of the extreme heat. No one could be doing this during the day. People must come out at night, when it is cooler, and meticulously pull the weeds. It becomes clear as the day passes and more and more of Bali is revealed, that attention to detail and extreme patience is a characteristic of the Balinese. The traffic is a dense mix of motorcycles, cars and trucks.
April 28, 2026
Like an exotic jewel set in the archipelago of Indonesia, Bali glitters and enchants. The Balinese have retained their unique community through intense social/religious bonds, hard work, exceptional talent and great sacrifice through the centuries to become a beautiful, gentle and inspirational community. Now, because of these unique qualities and accomplishments, finally and fatally they have become a primary tourist attraction that presently dominates 80% of their economy. The irony is that this may be the thing that destroys an incredible place and its people that hundreds of years of oppression and wars did not. If they don't soon diversify and return to the trusted systems that meant survival for their society over more than a thousand years Bali will no longer be a wonder of the World. Their unique form of Hinduism understood the root of survival when their irrigation system, subak, was first built. It was defined as a religious object to be venerated and protected with prayer, with temples and maintained by priests. Rooted in the Balinese philosophy, Tri Hita Karana, the principle of achieving harmony between humans, nature and the divine. It was the source of the staple food, rice. Water came from lake Batur, in the crater of the extinct volcano Kintamani, irrigated the hand cleared and formed terraces of rice paddies that descend in beauty and function to the sea. Seedlings hand planted by the women, sheaves of rice attached to the ends of poles carried across the shoulders of the men to the storage huts simple activities, carried out over more than one thousand years, that meant survival for a society. And the ancient kings of Bali also came together to sanction the subak. Agreement between religion and state. A rare thing in history and in the present. So what is happening now? How is tourism threatening the survival of the Bali we have come to know and admire? Aren't people coming to praise and enjoy? Isn't that a good thing? It is not the intentions of the visitors, it is the structures built around tourism that make tourism possible, they have become destructive. Why are they destructive? The answer is water. Because of the demands of hotels and resorts for fresh water, the water table has dropped by around 60%. Into the void presses the salt water of the sea. Not only is the amount of fresh water that feeds the subak compromised it is threatened by salination and made unusable for rice growing. This situation is sometimes referred to as being caught between a rock and a hard place. The government needs to step in and limit or freeze new construction of resorts till a sustainable balance is found. Also, water use needs to be prioritized and rationed for essential use, the subak system as a primary user. Finally, the income from tourism must be distributed back to the Balinese people for their dignified survival and flourishing. The dependency on tourism has created an imbalance. Men can be seen sleeping rough in the parks. There is desperation in the eyes of the women who sell clothing and souvenirs in the outside stalls. The main profession encouraged for children is hospitality work. The majority of profit from tourism needs to be returned to the people. They have earned it, they have built what we admire, they have carried in their hands and hearts the unique social compromise that has survived to this day against impossible odds and now it is being challenged by economic forces, more subtle but no less aggressive and destructive than war. Susan Caumont
April 17, 2026
Sea days pass differently than land days. At sea the ocean and the ship's passengers are the changing features. Land life has extra distractions, vehicles, shops, museums, temples, churches, gardens, bird song, dogs barking, taxi drivers, venders, airplanes, the full extent of human activity. During sea days I prefer to observe the ocean. I am aware of the passengers; like being part of an extended family or small village where you know most of the people a little and a few well. But the opportunity to be on the water for long periods is special. Sometimes, when the ocean is calm, a criss-crossing pattern may be seen on the surface, a delicate weave of vibration. I wonder if marine life is creating it, communicating. Other times the water heaves and agitates like an angry crowd is running here and there under a silk sheet. We sail six days from Adelaide to Fremantle, for the most part we encounter easy swells on this trip. The ocean lets us pass with tranquil, breathing heaves up and down. When we arrive there is an art festival in progress downtown. Crowds of people have traveled by train from the suburbs. We walk in. Some streets are blocked, making way for displays of crafts, performers, food venders and pedestrians. People are all around, eating, talking, buying stuff and watching the performers. Clowns, singers and acrobats compete for attention and overhead huge soap bubbles float, generated by the children nearby. It is a perfect day and everyone is out to have a good time.
April 7, 2026
Our stop in Melbourne was only for a day. There are plans to return after we visit Tasmania, which is just south of Melbourne. When you look at a map you can see where the island broke from Australia, a ragged triangle torn from the continent. England brought their convicts here to establish a penal colony in 1803, (convict transport ended in 1851, 50 years later) the colony eventually became Hobart, the capital city. Convicts were brought by sail. All the way from England around the southernmost tip of Africa, Cape Agulhas. A cape historically known to clipper ship sailors as a significant hazard, notorious for mammoth rogue waves of up to 30 meters (100 feet). What could these unlucky people have done to be banished on such a dangerous trip and so far away to an “uncivilized” island? Turns out prostitution and unwed pregnancy was enough to get sent there if you were a woman. And being an orphan, if you were a child.
March 25, 2026
The yellow pilot boat is approaching. A pilot will be brought onboard to guide our ship through the harbor. As we progress, a stretch of islands pass us on the left then, the coastline, on both sides. Sailboats, white triangles against the dark blue water, shine in the distance. Cliffs drop sheer from the pastureland to the tan beaches. Dark green groves fill the crevasses. We cruise along under the dome of the sky. Soon we will be docked at Port Melbourne, Hobson's Bay, Australia. Living life onboard, traveling around the world, I feel like a spirit watching the living as they go about their activities. I am a temporary exhalation, undetected then gone. But their doings remain in my mind. Humans are so very busy, especially the young adults. It takes significant aging to bring on stillness and reflection. My obscurity can make me sentimental. I feel a general affection for anyone who passes. I saw a baby watching sea gulls eat the French fries that someone had tossed to them. I imagined her forming her own impressions of everything around and not yet named. I wished her well and hoped that the war would end soon.
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