Watching the city blow up, we’re forced to recon with decades of racism and neglect. Now it’s time to get serious about solutions.
The Fukushima disaster screwed up Japan's climate strategy.
As world leaders prepare for climate talks in Paris, the secretary of state says the real leadership is coming from the local level.
The agency spent years cooking up its environmental justice master plan. Now it's time for action.
The most nightmarish scenarios of California's dry future are unlikely to happen. Still, the state must use the crisis as a wakeup call to use water more smartly.
A reader wonders if Cali is going to dry up and blow away. Umbra sprinkles a little wisdom on the subject.
OK, not really. He wants lots of other stuff too.
Check out the city's 592,130 street trees, representing 52 species, all at once.
A new study suggests China's tough new pollution standards might actually be working.