This year marks the 55th anniversary of Earth Day! Every year on April 22, people worldwide mobilize to address some of the most urgent threats facing our environment, from climate change to ...

Celebrate Earth Day 2025 on Tuesday, April 22, with moving Earth Day quotesabout the environment from conservationists and naturalists like John Muir and John James Audubon—and unexpected voices like ...

As Earth Day approaches its 55th anniversary, some experts ask whether the celebration has kept pace with the urgency of the climate crisis. On April 22, 1970, the United States witnessed an ...

In 1970, U.S. Sen. Gaylord Nelson created Earth Day to bring the issue to national attention, with 20 million demonstrators across the country speaking out against the effects of 150 years of ...