Noctilucent clouds: The season is here

Noctilucent clouds appear most commonly around June for Earth’s high latitudes. These mysterious "night-shining" clouds are beautiful ... see photos here.

Magnetic pole flip on Earth? Probably not soon

Is the South Atlantic Anomaly a sign that a magnetic pole flip on Earth is imminent? No, say researchers who analyzed 9,000 years of magnetic field history.

A meltwater imbalance from Earth’s 3rd Pole

An imbalance in runoff from melting glaciers at Earth's 3rd Pole - aka the Asian Water Tower - may mean more water in the north and less in the south.

Rivers can suddenly change course, study says

Studying rivers from space using satellite imagery helps scientists see how rivers can suddenly change course, bringing the risk of flooding to communities.

Video: Perpetual Ocean will wow you

To honor Earth's oceans on World Ocean Day (June 8), this beautiful NASA video, Perpetual Ocean, follows the currents and eddies around the world.

Ocean rings’ mystery stems from shape of seafloor

Researchers explain why some ocean rings, or eddies, last for months, while other last for years. The secret is the seafloor, they said.

Fireflies: How and why they light up

A firefly's familiar glow is caused by a chemical reaction. Why and how fireflies light up here, plus many wonderful firefly photos.

A word about Earth’s water cycle

Earth's water cycle is vital to life. Although the amount of water on Earth is fixed, it continually cycles between the oceans, atmosphere and land.

New record: Tonga volcano biggest of 21st century

The Hunga Tonga-Hunga Ha’apai eruption was the largest of the 21st century, and the explosion matched the eruption of Krakatoa in 1883.

Have a tornado tale? NOAA wants to hear from you

NOAA wants to hear your tornado tale. They're trying to learn more about how people react in a tornado. Learn more and find a link to their survey.