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Michael Brune

Exxon's First Prick of Conscience?

The fossil-fuel divestment movement has been on a roll lately to the tune of $50 billion, but one of its biggest successes happened last... more

Read More in Sierra Magazine

It's a farewell to arms for California sea stars.
The engine sound is more of a whine than a roar, and there are no clouds of black smoke, but the new all-electric Odyssey Battery Bigfoot No. 20 is all monster truck.
Vines were once just something that Tarzan swung on through the jungle. Then they got ambition. Now they're on the move, threatening to take over the world.
The weather had just cleared after monster storms in the Tetons. I went with some other experienced backcountry skiers to check conditions at a steep couloir called Double Dog Leg. There'd been an avalanche nearby the day before, but on a different aspect. We decided to give it a try.
Citizen scientists forgo the slopes to search for scat.
Invading the Privacy of the People Who Make the Club Tick
Move over, Glacier Bay. Hold on a sec, Yosemite. If you want to know what really motivated John Muir to protect America's wild places, you've got to go back to "that glorious Wisconsin wilderness" of the Sierra Club founder's boyhood.
A graphic look at where coal use has increased and decreased since 1965.