See stunning photos of Earth taken from space by astronauts and robotic spacecraft, celebrating our home planet on Earth Day.

Here's what to know about Earth Day 2026 and how the holiday came to be.

From its 1970 origins to today’s climate action, here’s why Earth Day is observed each April 22 and what the day represents.

The inaugural Earth Day, held on 22 April 1970, was strategically scheduled between spring break and final exams to maximise ...

Millions of people around the world will pause Wednesday, at least for a moment, to mark Earth Day. It's an annual event ...

Fifty-six years after the first one rallied 20 million people across America, “we need to do things that make us feel more ...

Fresh takes on Apollo’s famous “Earthrise” and “Blue Marble” images showed off our planet’s beauty just weeks before Earth ...

Earth Day often inspires communities to come together through volunteer work, and 2026 won't be much different.

This Earth Day, we reflect on our home planet and look at Earth from space through history.

Bork!Bork!Bork!: Dynamic Earth's ancient rock holds not primordial crystal, but a tiny Linux box having a bad day ...

From Ian McKellen as Gandalf to Viggo Mortensen as Aragorn, these are the actors who have been replaced by others in the Lord ...

Deep within Earth’s core, scientists are uncovering signs of a hidden structure that challenges long-standing models of the planet’s interior.