Bad air day

Should you avoid walking if the air is polluted?

Advice columnist Umbra Fisk clears the haze on this tricky question.

Save us Marky Mark

Deepwater Horizon is being made into a movie, and it looks disastrously good.

Environmental disaster is getting the Hollywood treatment.

water park

As the Potomac River rises, cherry trees planted along the sloped bank will drown, row by row.

Climate Chronograph is a stark reimagining of the modern memorial.

Sharing Ain't Always Caring

Airbnb is trying to address its racism problem.

In an email to users, co-founder Brian Chesky outlined the steps Airbnb plans to take to address discrimination.

"Fair and balanced"

Fox News acknowledged climate change, then promptly took it back.

For a minute there, Fox was on the same page as everyone else.

Guilt flip

If I use clean power, can I crank up the AC without guilt?

Advice columnist Umbra Fisk explains what it really means when you buy renewable electricity from your utility.

Hip Hip Hmm

Let’s all give a small, slightly restrained cheer for Costa Rica.

Costa Rica is increasingly running on renewable energy -- perhaps, however, at cost to its local ecosystems.

faith in the future

Morocco will create 600 environmentally friendly mosques by 2019.

The country will green hundreds of the country's religious centers with LED lighting, solar water heaters, and photovoltaic power systems.

oh frack

Fracking operations might’ve caused one of Oklahoma’s biggest earthquakes yet.

Oklahoma ties for its biggest earthquake yet.