World leaders are meeting for the 29th time to address the causes and effects of climate change. These five questions and answers show how much our planet has already changed.

Climate change is scrambling the oceans. It’s raising water temperatures, lowering pH levels, reducing oxygen availability, and driving down the size of wildlife populations the oceans can ...

Notably, however, the pie chart proved most effective among one group—Republicans—that is notorious for being the most difficult audience to sway on climate change.

The National Climate Assessment, issued this week by a team of government researchers, minced no words about the impacts of climate change: You’re feeling them now. “ Climate change, once considered ...

One of the cruel ironies of climate change is that its impacts tend to fall hardest on the countries least equipped to manage them. When drought or sea level rise strike the United States ...

But I have four issues with it: (1) Goklany's analysis does not extend beyond the 21st century. This is a problem for two reasons. First, climate change has no plans to close shop in 2100.

Earth Day organizers have dedicated the celebration's 43rd anniversary to highlighting the impact of climate change. Even though President Obama made mention of the issue in his second inaugural ...