Lawyers for the Sierra Club asked the EPA to check whether Pruitt violated policy by saying, "I would not agree that [carbon is] a primary contributor to the global warming that we see."
A study has identified which countries will be most affected by the U.K.'s departure.
A new study says climate change will alter transatlantic flight times within a few decades.
Revelation may mean China has emitted close to a billion additional metric tons of carbon dioxide into the atmosphere each year
Scientists say the biggest extinction event ever was caused by comparable rate of cO2 emissions to those seen today.
While we focus on annual carbon dioxide emissions, we ignore the long-term pollution newly built power plants will cause in the next 40 years.
The spacecraft will be able to see the light emitted from plants as they grow.