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Living

Ask Umbra: Eat a baby orange, kill a baby seal?

A reader wonders what happens to the mesh bags clementines come in. Umbra says those darling little oranges can make a mess in the caverns, in the canyons, and even the foaming brine.

Politics

Could Chuck Hagel, defense secretary nominee, turn out to be a climate hawk?

Hagel has long been confused about climate change ... and yet concerned about it too, particularly as a national security issue.

Climate & Energy

Obama vs. physics: Why climate change won’t wait for the president

Climate change is not a fight, like abortion or gay marriage, between conflicting groups with conflicting opinions. It's a fight between human beings and physics.

Climate & Energy

How one small sentence kicked up a storm of climate controversy

In 1996, 12 words in an international climate report set off a firestorm. The man responsible for that sentence, Benjamin Santer, says things have never been the same.

The bizarre and fascinating history of lead in gasoline

The story of how lead got in gasoline -- and stayed there for decades -- is endlessly fascinating.

Cities

Sims’ city: Urban America, as seen by Obama’s former HUD boss

Former HUD bigwig Ron Sims talks about Obama’s urban policies, suburban sprawl, and tackling unemployment and the climate crisis at the same time.

The fight over lead: It’s like all pollution fights rolled into one

We could be learning a lot from the fight to clean up lead pollution. But we're not.

Food

Congress extends farm bill, still manages to screw sustainable farmers

When Congress passed a nine-month farm bill extension as part of the fiscal cliff negotiations, it disappointed sustainable food advocates around the country.

Living

The Greenie Pig’s guide to a cleaner, more sustainable 2013

Grist’s green-living pioneer has spent the past year trying to be a little kinder to the planet. Interested in doing the same? Here are five simple guidelines.