Dr. Philip S. Callahan is a philosopher as well as a top-grade scientist. He is also an explorer who has walked across mainland China and the Syrian Desert, obs

At a time when night-singing insects have slipped beyond our notice—indeed, are more likely to be heard as NatureSounds than in a backyard—John Himmelman se

Ancient peoples understood the growth and healing powers of rocks-now Dr. Callahan has rediscovered that force.

How do people avoid the stresses of the digital age? Urban dwellers must now turn to nature to recover, restore and rebalance after the stresses brought on by r

A leading evolutionary thinker, biologist, and medical researcher asks the question: "Could life elsewhere be substantially different from life on Earth?"--and