These points of no return are specific moments when the planet has warmed so much that certain effects become irreversible.

April 22 is traditionally known as Earth Day, the occasion where we pause as temporary travelers on our 'blue marble' to ...

Thousands of events are scheduled across the globe to celebrate Earth Day on Tuesday, April 22. Here's a handful happening in ...

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

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

Earth Day has always been a day that acknowledges our planet, which provides for us, and ways we can protect and preserve its ...

The actions of the Trump administration will significantly decelerate the race to decarbonize economies around the world, ...

In an Earth Day message, Trump's White House touted his rollback on climate protections as a boon for the environment.

To mark the global holiday focused on a more sustainable future, many Americans have engaged in nationwide protests, as ...

As you read this, the North American continent’s underside is dribbling away into Earth’s molten mantle. And according to ...

Looking for something to do to celebrate Earth Day in the Seattle area? Here are some options, presented by The Seattle Times ...