Why Do We Not Spontaneously Combust?
James Lovelock has pointed out that atmospheric levels of oxygen much above about 25 percent, let alone 30 percent, would cause raging conflagrations today.
Human Designers Struggle to Match Biological Designs
Mother-of-pearl, or nacre, is not only a beautiful substance for jewelry and ceramics; it is a remarkable material.
Claiming “Person” Status, the Colorado River Sues
The river’s lawyer and an environmental group win friendly coverage from the New York Times.