Planet Earth

The 95-year-old broadcaster is just the fifth person to receive the honor.

Earth scientists in China have found evidence of a subduction zone dating to 2.5 billion years ago.

The gigantic megaquake is matched only by the 1960 Valdivia earthquake in the same region.

It's confirmed: The hottest rock ever discovered in Earth's crust really was super-hot.

More than 5,000 new virus species have been identified in the world's oceans, according to a new study.

In 1958, an earthquake in Alaska triggered the largest wave ever recorded on Earth, which reached a maximum height greater than the Empire State Building.

The Russian invasion of Ukraine is being felt far and wide, from risks to nuclear power plants to impacts on science experiments to fear of a nuclear war.

Lightning is one of the greatest natural forces on our planet. New mapping tools are revealing just how big it is.

A vast reservoir of the rare gas helium-3 may be hanging out in Earth's metallic core.

Drought might have played a major role in the abandonment of the Eastern Settlement of Vikings around 1450, new research finds.

What cities, states and countries are most at risk from rising sea levels? What can they do to protect themselves?

A massive Antarctic ice shelf that covered an area about the size of New York City or Rome just collapsed into the ocean.

On March 25, thousands of young people around the world mobilized to demand government action to curb climate change.

Symmetry is so common in biology because life favors simple structures over complex ones.

Researchers using a giant electromagnet suspended from a helicopter have created a detailed map of the hydrothermal system underneath Yellowstone National Park for the first time.