Gallery: Hawaii’s Mysterious Coral Reefs Turn Out to Be Super Weird

Scientists can’t agree why reefs in the Red Sea have long been immune to bleaching. The answer could be the key to saving these tough corals as climate change begins taking its toll.

Scientists left structures up to 100 meters under the surface. Here’s what they found when they retrieved them 10 years later.

As coastlines change, so do surf breaks. That may spell the end for premier waves and the tourist economies that depend on them.

While oil is known to float, new research finds that over time it can permeate even extremely deep marine habitats, with animal populations declining by as much as 80 percent.

Seven of 16 planetary vital signs are in their most extreme state ever recorded, and El Niño is here to make matters even worse.

Tropical Storm Isaias is set to become the basin’s first hurricane of the season, bringing life-threatening rain and storm surge to the Gulf Coast.

The new image isn’t just stunning—it may also provide clues about how this star survived its own explosion.

Redwoods adapted to a cool, foggy climate. Now a new study shows they slow down photosynthesis when their environment warms.

Here’s what we know about the record-setting El Niño on a record-hot planet, and the most important questions scientists are trying to answer.

The cloud has baffled astronomers since its discovery in 2018. Now, a new study offers a possible cause for its appearance.

Under 1 million years old, “Elias 2-24b” is now the youngest exoplanet ever observed, and it may force researchers to reevaluate theories about how planets are formed.

The Webb telescope sees tiny red dots everywhere. Astronomers can’t agree on what they are, but some believe they may be enormous stars with black holes inside.