Earth Day began as a protest in 1970, but its meaning has evolved. Here’s how it changed - and what it represents today.

New evidence from rocks, molecules and machine learning is forcing scientists to redraw the opening chapters of Earth’s story, pushing the first stirrings of biology far closer to the planet’s violent ...

If current scientific models are anything to go by, Earth, now 4.5 billion years old and halfway through its total lifespan, has about a billion years of livable conditions left. After that, the ...

Climate change is making extreme weather feel closer than ever, with longer heatwaves, stronger storms, and shifting seasons.

From time to time, the Earth's magnetic poles flip, leaving us without a protective magnetic field for up to centuries ...

The giant asteroid Apophis will make a historically close approach to Earth on April 13, 2029. Scientists have ruled out any risk of Apophis hitting Earth for at least the next century. The 2029 flyby ...