President Obama made an appearance in the Florida Everglades Wednesday to deliver an Earth Day speech aimed at warning the public about climate change and criticizing politicians who the administration says have ignored the issue. The location and date were both intentional; in his speech, Obama emphasized the value of America's many natural treasures and highlighted the damage climate change can cause cherised sites like the Everglades. President Barack Obama walks the Anahinga Trail at Everglades National Park, Fla., Wednesday,...

On the surface, it looks like something horrific is happening at Antarctica's Blood Falls. Only recently, it's been discovered that there's more happening here than just a chemical reaction that turns salty water into a substance that's the color of blood. Scientists have been studying the complex Blood Falls for years, but a recent study has found more information about the origins of this discoloration. And as the study discovered, there is underneath all that Antarctic ice. Here's how it...

is a game of millimeters a year, but those millimeters add up to a huge amount of water entering the world’s oceans. And the rising tide could eventually swamp cities around the globe. With tide gauges distributed sparsely around the planet, scientists have turned to satellites to provide a global picture of sea level since the early 1990s. New research published on Monday in Nature Climate Change refines those satellite estimates and provides some good and bad news. The good...