Breathless

Is too much carbon dioxide the problem? Or is too little oxygen? These are articles about climate change, in particular, global oxygen depletion, that will leave you feeling breathless.

How much oxygen a human breathes in one day. Infographic. This illustrates shows the surprising volume of oxygen used by a human. It compares the volume 551 liters of pure oxygen to the size of 8300 liters of air.

How much oxygen does a human breathe per day?

We often take breathing for granted, but our bodies process 8,300 liters of air every day to get the oxygen we need to survive. In this article, I show the math and compare this amount to how much a tree produces, and how much a car burns. This is part of my Global Oxygen Depletion series.
Wispy tendrils of hot dust and gas glow brightly in this ultraviolet image of the Cygnus Loop Nebula, taken by NASA’s Galaxy Evolution Explorer.

Where does oxygen come from and where does it go?

Like me, you may surprised to learn that there will never be more oxygen on the Earth (or in our solar system) than there is right now. And when it comes to the breathable kind, there will be less and less oxygen until it is gone, though, luckily, that could take billions of years.
A picture of the Breathless reader's guide

Breathless reader’s guide​

Why not enjoy an evening talking about the end of the world with your friends and a glass of wine!? Download this reader's guide, which includes thought-provoking questions, more information about the book's story structure, and bonus content.
A leaf of basil back lit by the sun and full of colorful sparkles.

How to measure atmospheric oxygen depletion

This article is more for scientists and field researchers. A practical step forward in determining global oxygen depletion rates. A conclusion to decades of research.
A man wearing a gas mask watches television in a smoggy dystopian world.

How long before the Earth runs out of oxygen?

Have you ever wondered how much breathable air is on Earth, and if we'll ever run out? Our atmosphere is paper-thin relative to a basketball, and we use its oxygen to power internal combustion engines, create electricity, and manufacture products (cement, chemicals, plastic). Worse, we are destroying the plants that make more breathable oxygen.
How much oxygen does a tree produce?

How much oxygen do plants produce?

I calculate how much oxygen a tree breathes and how much excess oxygen a tree produces in three different ways. Spoiler alert: It's not a lot.
The song of global oxygen depletion. Art by @Stevenmarkperry.

10 reasons why global oxygen measurements may be wrong

Ten reasons why we might be measuring oxygen in the atmosphere wrong. And how global oxygen depletion may be a hidden driver of climate change.
A dramatic picture of water droplets (clouds). A metaphor for the mass of oxygen on Earth.

How much oxygen is in the atmosphere?

I demonstrate how to calculate the mass of oxygen in the atmosphere. And I talk about ten reasons why the accepted values may be wrong.
Natural gas stove burning blue.

How much oxygen is consumed by fossil fuels per year?

What if the driver of climate change is NOT carbon dioxide but oxygen depletion? See the math to compare CO2 emissions to oxygen burned.
Global Oxygen Cycle sources and sinks. Illustration of oxygen being exchanged between land, sea, air and space, plus mankind's industry.

How much oxygen is consumed by the Earth per year by natural causes?

There are many ways oxygen is burned/consumed/oxidized. It is a very reactive element. We highlight the major natural causes, like: respiration, decomposition, forest fires, rust and more.
The war versus peace dilemma.

What is the better survival strategy: cooperation or competition

There is a growing discontent between classes and the battle between greed and altruism -- the American Dilemma. This article is about a third option.
The world population growth chart of homo infographic sapiens infographic. At the rate we are going the line will be off the chart in a few decades.

Human population bomb

This graph illustrates the exponential growth of the human race and the consumption of non-renewable resources. The question isn't if the population will stop growing/consuming, but when?