Gallery: America Is Still Great—Just Look at Yellowstone's Majestic Creatures

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

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

Made up of small fragments left behind by Halley’s Comet, these meteors are known for being especially bright and speedy.

Ancient plants reveal that the vestiges of the North American ice sheet started expanding a few thousand years ago, but that climate change caused it to reverse course.

Warhound came out of stealth on Wednesday with $200 million in funding and a mission to create “elite working dogs” equipped with "advanced body armor."

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

Lying beyond Pluto, 2026 ED138 could be as large as 1,500 kilometers in diameter. Astronomers are still working to confirm whether it meets the criteria for a dwarf planet.

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.

What’s it like to be the richest man in the world? Find out for yourself.

The team behind director Takashi Yamazaki’s new film created their kaiju roars by setting up speakers on top of an outdoor dam. The people walking by weren’t prepared for what they heard.

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.