Favorite Articles

A dramatic picture of water droplets (clouds). A metaphor for the mass of oxygen on Earth.
Ideas

How much oxygen is in the atmosphere?

I demonstrate how to calculate the mass of oxygen in the atmosphere. And I talk about nine reasons why the accepted values may be wrong.

Natural gas stove burning blue.
Ideas

How much oxygen is consumed by fossil fuels per year?

Oxygen depletion compared to carbon dioxide emissions. Author’s note: This isn’t one for my usual audience. It’s super heavy on the science. If you want to know the answer to how much oxygen is consumed by fossil fuels and three reasons why oxygen depletion may be the bigger problem, just skip to the bottom. (One

Scott riding his bicycle on Mars. The background is actual Mars, and the photo of Scott is from Tibet.
Scott's Adventures

Scott’s name lands on Mars

Aboard the Perseverance is my name, “Scott Stoll,” engraved on a silicon chip. Does that make me an astronaut? Are dreams written in stone — or silicon? Can Martians read? 

Bahamas license plates mural artwork
Scott's Adventures

The Untold Stories

When I was younger, I wanted to do something never done before. I wanted to conquer the world and stand on the tallest mountain. As I grow older, I see every day as a new adventure.

Do cats get depressed
Ideas

Is depression bad?

Is depression bad or good, abnormal or normal? Is depression a bodily sensation or an emotional feeling? The answer will surprise you and help you feel better.

A packing list from a bicycle tour guide in 1897. See the article to read the complete list.
Ideas

A bicycle touring packing list from 1897

Times have changed! Both culture and technology. How many of these items from the Victorian era would you include on your cycle touring packing list?

The Hero's Journey
Ideas

What is an adventure?

Words like adventure, hero and epic have become cliches that have lost their meaning. So unfortunately we can’t say: “I’m a a hero going on an epic adventure,” and be meaningful. So, what exactly is an adventure? And how do we make every day an adventure?

A close up of the artistic cover of the Hero With A Thousand Faces. Hundreds of real people, like a mosaic, paint the picture of a hero.
Ideas

What is a hero?

Is it true that the only people who achieve great things are the ones who take risks and reach for the impossible. Is that what it means to be a hero?

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