It's been 44 years since the first Earth Day was celebrated in 1970, and since that time, average temperatures have been rising across the U.S. This Climate Central interactive graphic shows a state-by-state analysis of those temperature trends
On Tuesday, three former NASA astronauts are expected to present their findings that the Earth had experienced far more impacts from large asteroids than previously thought. For Robertson, the news was just the latest
Selections made by TIME's photo editors are featured on the massive NASDAQ billboard in Times Square on Earth Day. The NASDAQ billboard in Times Square features Google+ users' earth day photos selected by TIME's photo editors. Wesley Houser /
An idealist at heart, my Earth Day wish is for all of us to commit to achieving an environmentally sustainable, socially just, spiritually fulfilling way of living and being on our planet. I realize this sounds like a tall order.
In celebration of Earth Day, which takes place on April 22, Apple has started updating the logos of some of its retail stores with green leaf