Scott Stoll logo world traveler. A bicycle wheel and the globe symbolizes Scott's journey around the world on a bicycle.


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.

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 will ever run out? Our atmosphere is paper-thin relative to a basketball, and we use its oxygen to power internal combustion engines, like planes, trains and automobiles, and there is a 60% chance that the electricity you are using to read this post came from fossil fuels combined with 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.

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.

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 Growth Chart

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?

Gulf oil spill satellite view NASA

Is the oil spill a good thing?

Here’s an exercise in thinking positive using the BP oil spill as an example. Also, it seems one of the byproducts of traveling the world is a desire for social activism, because I never imagined thinking of stuff like this.

An illustration of oxygen molecules (O2) and fossil fuel (C) going into the engine of a car, and molecules of carbon dioxide (CO2) coming out the exhaust pipe.

How much oxygen does a car burn?

We are all aware of our reliance on fossil fuels and their byproduct of greenhouse gases and poisons. But have you ever wondered about the oxygen needed to burn the fuel?

Underwater bubble ring of oxygen

Introduction to global oxygen depletion

As mankind burns more and more fuel, we are also burning more and more oxygen. Simultaneously, the Earth’s ecosystem is being destroyed. At what point does the Earth reach a tipping point? And, how long before we run out of air to breathe?

Scott Stoll sitting at the radio soundboard.
Scott's Adventures

Sustainable Futures

I recently did an in-depth interview in Vancouver for Sustainable Futures with Ryan Fletcher. This two part episode features stories of my travels framed in the context of creating a sustainable future and the rise of a global consciousness.