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

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

Two mysterious blobs deep inside Earth may hold clues about the origin of life on our planet, new research finds. Deep beneath Earth's crust, in the mantle, lie two continent-sized blobs. These ...

From its 1970 origins to a global movement, Earth Day 2026 highlights the power we all have to protect our planet.

A river on fire in Ohio, a massive oil spill in California and a senator fighting for change: This is the story of how Earth ...

Grab-and-go missions to asteroids have provided some of the most scientifically valuable samples since the Apollo missions—and they’re shaking up the search for life beyond Earth. The OSIRIS-REx ...

(CNN) — Researchers say they have uncovered evidence that early Earth was home to more hydrogen than previously thought, calling into question widely held beliefs about the origins of water and the ...

Earth Day 2026: History of the global movement fighting for our planet - Millions of people around the world will pause on ...