Pigeons with tiny backpacks test the air in London

Equipped with air quality sensors and GPS trackers, the birds are tweeting about the city's dirty air.

Shell worries about climate change, but decides to continue making it worse

Don't get too excited about Shell's stated commitment to the cause.

Hell and High Water

Houston is a sitting duck for the next big hurricane. Why isn’t Texas ready?

Houston is home to the nation's largest refining and petrochemical complex, where billions of gallons of oil and dangerous chemicals are stored.

Could there be a Fukushima-like disaster in the U.S.?

On the five-year anniversary of Japan's nuclear meltdown, we might want to look to our own aging plants.

Will Exxon face a lawsuit for denying climate science?

The attorney general answered questions this week about an investigation into Exxon.

Marco Rubio keeps digging himself a deeper hole on climate change

Hint: It's not just because he denies the science.

Money doesn’t matter: White people breathe cleaner air

Too often, your access to fresh air depends on your skin color.

Miami GOP mayor gives Marco Rubio a chance to lead on climate, and Rubio fails miserably

Marco Rubio: "Well, sure, the climate is changing and one of the reasons why the climate is changing is the climate has always been changing."

Obama and Trudeau take a big step on methane

Bros before oil and gas CEOs.