The secrets of noctilucent clouds

Noctilucent cloud season has returned to Earth’s high latitudes. These "night-shining" clouds are beautiful ... photos here.

World’s best dads: Bullfrog protects tadpoles

Watch, as this African bullfrog protects tadpoles in a drying pool. How does he save them? Check out this video, and happy Father's Day!

The sad fate of krill in the Southern Ocean

Krill in the Southern Ocean are projected to decline about 30% this century, due to human-driven climate change. But natural variability also plays a role. A new study tries to tease out the difference.

Earth’s lopsided core? Strangeness in our planet’s interior

A new computer model suggests Earth's lopsided core growth. That is, the inner core grows faster on one side than the other. Faster cooling on one side of the core helps explain why.

5 satellite images show how fast our planet is changing

Here are 5 satellite images that illustrate how fast Earth is changing.

Meet Australotitan: Australia’s largest dinosaur yet discovered

Australotitan is Australia’s largest dinosaur species ever discovered, as long as 2 buses as heavy as 1,400 kangaroos.

What is Earth’s Ring of Fire?

The Ring of Fire is a region of very active seismic activity - with most of Earth's volcanoes and earthquakes - caused by interacting tectonic plates.

Happy World Oceans Day 2021

World Oceans Day has been celebrated every year on June 8 since 1992. It's a day to raise awareness about how we're connected to the oceans - no matter where we live on Earth - and what we can do to protect ocean habitats.

‘Listening’ to save the North Atlantic right whale

The North Atlantic right whale is endangered. A new technology finds the whales as they approach harmful and noisy situations, with the aim of protecting them.

What is the age of Earth?

Our planet does not give up its age easily. Scientists studied the oldest rocks from our planet and solar system to figure out Earth's age.