Earth Matters

What to see in the night sky in March

Antarctic blue whales make 'unprecedented' comeback

A second, smaller moon has been hanging around our planet for years

Astronomers just detected the largest explosion in our universe since the Big Bang

White-nose syndrome haunts bats

It's time to stop releasing balloons

Seagulls like food better if humans touch it first

This microscopic parasitic animal doesn't breathe, and it's the only one we know of

NASA video reconstructs the harrowing lunar journey of Apollo 13

15 facts about the oddball kakapo

10 fascinating facts about polar bears

NASA's InSight lander confirms 'marsquakes' are real