Some mainstream environmental organizations are trying to wean themselves from fossil fuel investments—but some aren’t.

How Americans unwittingly entered—and become exposed to biohazards in—the greatest uncontrolled experiment ever launched.

In the coming decades, two converging nightmares are likely to produce a tidal wave of unrest, rebellion, competition and conflict.

And if so, is that terrible news?

For every San Francisco earthquake and Superstorm Sandy, some die—and others profit.

Four decades ago, he spoke out bravely against the Vietnam War. Will he show the same courage today, in helping to end the fossil-fuel era?
 

How did a man who got so many things wrong become an intellectual celebrity in his own lifetime?

The growing threats of nuclear war and environmental catastrophe make it hard to bet on the survival of our species.

Collecting DNA upon arrest can identify the guilty and exonerate the innocent. But it also amounts to an expanding racial dragnet.

Allowing polluters to trade carbon could keep poor Californians breathing unhealthy air.