Tag: oxygen
Doctor’s Diary: Evolution in the Country of the Blind
Fans of H. G. Wells are probably familiar with his 1904 short story, “The Country of the Blind.”
How the Body Meets Its Need for Oxygen — A Doctor Explains
Finely tuned and exquisitely engineered, this system gave our ancestors enough oxygen not only to stay alive but to thrive in the face of grave challenges.
Fire and Fitness: A Summary of the Evidence
Surely there could not be an equivalent ensemble of fitness in nature for some other type of life.
What if Our Muscles Were Less Powerful?
As every medical student comes to learn when first dissecting the human body at medical school, our limbs are almost entirely composed of muscles.
The Role of Lignin for Fire, Explained
Without lignin, there would be no woody plants, no wood, no coal, no charcoal, no fire, no pottery, and certainly no iron or metallurgy.