This Saturday is Earth Day, and communities across the country are mobilizing to clean up their shared green spaces and waterways, plant air-cleaning trees and bring more attention to climate change.

It was Earth Day earlier this week, but Gothamist thinks it's still Earth Week, and during the commute home, we spied the Earth Day images being projected onto the North Hall at Grand Central Terminal ...

Happy Earth Day! For the 55th year, the world is using the day to celebrate Mother Nature and the wonderful planet we live on. "Earth Day really is a symbol of the environmental movement," Sarah ...