ABC News chief meteorologist Ginger Zee tackles one of the most common myths she hears about climate change. Samuel Alito ...

The first Earth Day was celebrated in 1970, making this year's festivities the 55th annual festival. For the first Earth Day, ...

Now celebrating its 55th anniversary, this year's Earth Day theme, "Our Power, Our Planet," calls for people worldwide to ...

Scientists warn that human-driven species loss is accelerating, with entire branches of life vanishing at unprecedented rates ...

Gaylord Nelson, the late U.S. senator and governor of Wisconsin, is considered the founder of Earth Day, which started in ...

Earth Day has inspired protests against the Trump administration, and for more clean energy policies, across the US ...

Tuesday is Earth Day, a day celebrated worldwide to appreciate the beauty of our planet, and work to protect it.

Earth Day is on Tuesday, April 22, this year. The annual observation is set aside to increase awareness around environmental ...

The holiday remains one of the largest secular observances in the world, used to spotlight ongoing threats including plastic ...

Dozens of supporters, including U.S. Reps. Rashida Tlaib and Debbie Dingell, joined federal workers from NOAA, the EPA and ...

Fifty-five years after the first Earth Day, Environmental Protection Agency employees and advocates call for help as the ...