A scuba diver in Israel discovered a 900-year-old sword off the country's Mediterranean coast that experts say likely belonged to a Crusader knight.
A pig kidney was successfully tested on a dead patient last month for the first time without being immediately rejected.
A robot dog armed with a sniper rifle was unveiled this week in Washington, D.C. at the annual meeting of the Association of the United States Army.
Russian thrusters have accidentally tilted the International Space Station (ISS) for the second time this year.
California officials say tar balls have been seen on local beaches following the oil spill in Orange County last weekend.
NASA's Perseverance Mars rover team has confirmed that the red planet's Jezero Crater was once the site of a delta-lake system.
China's lunar rock samples – the first moon rocks returned to Earth in more than 40 years – show lava flowed there 2 billion years ago, according to scientists.
Researchers found an engraved deer bone that is at least 51,000 years old in northern Germany, which they believe might be among the oldest pieces of reliably dated art.
The National Hurricane Center issued a tropical storm warning for the Florida Keys, in addition to storm watches for the state's southwestern coast Sunday morning as Tropical Storm Elsa headed toward the state.
Brood X cicadas were seemingly everywhere across the eastern U.S. last month.
A tropical storm watch was issued for the Florida Keys from Craig Key westward to the Dry Tortugas Saturday evening as Tropical Storm Elsa headed toward the state.
A wildfire is burning in California. And Oregon. And Washington. And Arizona. Historic drought and climate change play a major role in the 2021 fire season.
A study published in the journal Nature Communications suggests that dinosaurs were in decline for as many as 10 million years prior to the Chicxulub, Mexico asteroid.
Hurricane Elsa weakened slightly early Saturday as it continued barreling through the Caribbean on its way to Florida, according to reports.
A team of scientists is reportedly working to obtain the sharpest pictures of the Cascadia subduction zone ever taken.
The Titanic is disappearing. The iconic ocean liner that was sunk by an iceberg is now slowly succumbing to metal-eating bacteria: holes pervade the wreckage, the crow's nest is already gone and the railing of the ship's iconic bow could collapse at any time.
Tropical Storm Elsa formed from Tropical Depression 5 overnight Wednesday as it headed toward the Caribbean, the National Hurricane Center said Thursday morning.
The U.S. has been threatened by unprecedented heat during summer 2021, with records quickly toppling in June.
Erosion, sinking land and sea rise from climate change have killed the Louisiana woods where a 41-year-old Native American chief played as a child. Not far away in the Mississippi River delta system, middle-school students can stand on islands that emerged the year they were born.
NASA Administrator Bill Nelson says he doesn’t think we "are alone" after reading the US intelligence community’s recent report on unidentified aerial phenomena.
A new study is throwing cold water on the possibility of life in the clouds of Venus.
A baboon snatched up a baby gazelle and tore it to shreds in front of a wildlife photographer at a Kenya preserve -- a gory scene that was caught on camera.
A 35-year-old man swimming in Northern California was attacked by a great white shark Saturday morning and was hospitalized in serious condition, according to a report.
NASA said Friday it had completed additional diagnostic testing in an effort to identify a problem with the Hubble Space Telescope's (HST) payload computer.
A large fossilized skull discovered in China in 1933 may be a new species of ancient human, scientists said on Friday.
Feeling like you are being watched? It could be from a lot farther away than you think.