David Grinspoon

Can a planet be alive? Lynn Margulis, a giant of late 20th-century biology, who had an incandescent intellect that veered toward the unorthodox, thought so. She and chemist James Lovelock together theorized that life must be a planet-altering phenomenon and the distinction between the “living” and “nonliving” parts of Earth is not as clear-cut as […]

The Gaia hypothesis implies that once alien life takes hold, it will flourish.

Venus used to be as fit for life as Earth.

Kim Stanley Robinson imagines our future.