The power source for Earth's magnetic field may be magnesium minerals trapped in the core since our planet's violent birth.
Two volcanic islands that were recently born in the Red Sea are providing scientists with new information about a little-known rift in Earth's crust.
The jet stream off the East Coast of the United States controls an important climate pattern in the Atlantic Ocean.
Billions of by-the-wind sailors, also called Velella velella, could wash ashore in coming months because of favorable water temperatures and onshore winds.
The West can expect its warm and dry weather to continue through the summer, while the central Plains will be relatively cool and wet.
A citizen-science project will examine the microbiome of cats' digestive systems, in both house pets and wild animals.
The longest consecutive train of Kelvin-Helmholtz waves ever seen in the sea was spotted in the Atlantic Ocean's Romanche Fracture Zone.
A vast Antarctica ice shelf that partly collapsed in 2002 has only a few years left before it fully disappears.
Thanks to Twitter, the chances of spotting the aurora borealis are getting better, a new study reports.
A new model from the Los Alamos National Laboratory in New Mexico reveals the Southern Ocean is a turbulent rush of swirling eddies and currents.
The remaining Larsen C ice shelf is melting from more than just toasty air. The Larsen C is also disappearing due to warming in the ocean.
The powerful aftershock that struck Nepal today (May 12) could trigger deadly landslides on slopes already weakened by the April 25 earthquake, experts said.
Timeworn Antarctica ice suggests a strong link between carbon dioxide levels and glacial cycles for the past million years.
A stunning image of more than 15,000 airplane flights around the world shows that satellite tracking of commercial aircraft is moving closer to reality.
Subtropical Storm Ana threatens the Carolinas a month before the official June 1 start of the Atlantic hurricane season.
Radar waves helped search and rescue teams find and save four people trapped in collapsed buildings after the Nepal earthquake.
A subduction zone is a collision between two of Earth's tectonic plates, where one plate sinks into the mantle underneath the other plate.
The nation's capital sits on shaky ground that jiggles like pudding when earthquakes rattle the East Coast.
The Chicxulub meteor impact 66 million years ago may have triggered a magnitude-11 earthquake that shook loose massive amounts of lava in India.