Earth is home to more than 3 trillion trees, a new map of forest density shows. That's more than anyone realized. But the total is also down about 46 percent since the first humans arrived.
Tiny island nations, Latin American developing countries and even non-joiners like Switzerland have all found more power and influence in climate negotiations after forming or joining a group.
Efforts to change the mountain's name back to Denali date back to 1975. The White House says changing the name back "recognizes the sacred status of Denali to generations of Alaska Natives."
Cities and towns across the West are warning residents that high levels of smoke from forest fires threaten their health, with no sign of abating. That means indoor recess and no vacuuming.
A new novel doesn't take the easy way out but, instead, asks questions about the mutations of human institutions under the pressure of global warming, says commentator Adam Frank.
The majority of Americans favor government action, but the candidates — and big donors — differ greatly. Here is what they've said on the topic, beginning with whether climate change is real.
The California fire is unusually intense and unpredictable. But between climate change and the impact of decades of poor management, such wildfires may be the new normal.