Mark Hertsgaard

Mark Hertsgaard is the environment correspondent for The Nation, a fellow at the New America Foundation, and a cofounder of Climate Parents. His six books include "HOT: Living Through the Next Fifty Years on Earth."

Plant matters: Is photosynthesis the best defense against climate change?

Photosynthesis, in the form of biochar, may be an important weapon in the fight against climate change.

The worst part about BP’s oil-spill cover-up: It worked

Here's what BP doesn't want you to know about the use of Corexit after the 2010 Gulf of Mexico spill.

"no new coal" protest

Missing the point of the cap-and-trade defeat

We already have a popular grassroots movement demanding climate action: Beyond Coal. And D.C. environmentalists could learn a lot from it.

Cycles and cents: One city sets out to prove that bikes are good for business

Known as a car-addicted city, Long Beach, Calif., creates the nation’s first “bike-friendly” business districts, and it seems to be working.

New approach to climate deniers: Launch them into space!

Sir Richard Branson in his WhiteKnightTwo aircraft.Photo: Dave Malkoff This story has been corrected and updated since its original publication. See below for details. Here’s a new idea for how to deal with climate deniers: Blast them into space. The …

Why Seattle will stay dry when your city floods

Seattle is better prepared for a climate-changed future than most U.S. cities. You can thank Ron Sims.

What climate activists could learn from the anti-slavery movement

Climate activists who are discouraged by recent failures of worldwide leaders can find inspiration in the successes of the abolitionist movement.

Meet Generation Hot

Every child born after 6/23/88 belongs to what I call Generation Hot. They will spend the rest of their lives confronting global warming's impacts.

A deepwater drilling moratorium might be a bad idea for Louisiana

We can’t all go cold turkey.This article is part of a special issue of The Nation magazine about green energy, “Freedom From Oil.”  PORT SULPHUR, La. — Captain Pete, as everyone in town calls him, has been an oysterman nearly …