U.S. Secretary of State John Kerry addresses delegates before he signed the COP21 Climate Change Agreement on Earth Day, April 22, 2016, at the United Nations General Assembly Hall in New York, N.Y.

The Paris Agreement: Annotated

Adopted by almost 200 parties at the 2015 UN Climate Change Conference, the Paris Agreement captures international ambitions for cooperative climate action.
Tornado

When Tornadoes Strike at Night

Injuries and fatalities tend to be higher if people are asleep.
Venice, Italy with flooding and tourists walking in high water

Is It Time to Say Good-Bye to the Mediterranean?

The cradle of civilization may not support our civilization anymore.
flooded houston hurricane harvey impact

Natural and Man-Made Disasters, from Atom Weather to Fire Ants

Mother Nature’s wrath can be unpredictable and random, but history shows that humankind is ultimately responsible for many "natural disasters."
tiny fur tree growing after forest fire

It’s the End of the World as We Know It. Is there Any Room for Optimism?

Climate scientists tend to be optimistic and have faith that humanity can engineer our way out of the climate change we’ve created.