Researchers have been debating the Tully monster's evolution since the creature was discovered in the 1950s.
The fossil record is filled with strange marine animals that would look like sea monsters if they were alive today.
There's a huge difference between sending humans to Mars and colonizing worlds outside our solar system.
The real-life origins of a once-mythological wildcat called the "cat-fox" are finally coming to light thanks to recent genetics research.
Researchers have recorded an orca swimming with a pilot whale calf in a possible interspecies adoption, but how the two came together is a mystery.
Cruise liner guests encountered giant phantom jellyfish off the coast of Antarctica while diving in submersibles, a new study finds.
If humans suddenly disappeared and our pets had to fend for themselves, could dogs survive in a world without people?
The ancient Egyptian pyramids have stood for thousands of years and are among the world's most enduring monuments. But what did the pyramids look like when they were first built?
The most notorious pirates wreaked havoc from China to the Caribbean. Here are 10 fearsome pirates from history.
Bigfoot, or Sasquatch, is one of North America's most enduring legends, with thousands of people claiming to have seen the giant ape-like creature. Here are the most famous Bigfoot sightings.
"Living fossils" like Triops tadpole shrimps are believed to have rubbed shoulders with the dinosaurs, but which animal has been on Earth the longest?
Bigfoot, or Sasquatch, is a large ape-like creature some people believe inhabits North America but there's no hard evidence it actually exists.
Discover where cottonmouth snakes live, how to identify them, and whether they are venomous and aggressive.
The longest-living animals can survive for centuries and millennia, even pausing the aging process altogether. Here are the longest-living animals in the world.
Human remains are stolen from graves to supply the U.K.'s largely unregulated human remains trade, experts say.
Human skulls and bones are desecrated and sold on social media, but it's legal in the U.K.'s thriving human remains trade, a Live Science investigation has found.
An armored "worm" from the Cambrian called Wufengella bengtsoni is the ancestor to three major animal groups that have totally different lifestyles today, a new study finds.
"Alien goldfish" from the Carboniferous had toothy tongue-like structures that resembled those in living mollusks, a new study finds.
A "donut" of mesmerizing cell-forming microtubules is among the top entries of Nikon's 2022 Small World in Motion Competition.
Lizards are a diverse group of reptiles made up of thousands of species around the world, including giant Komodo dragons and chameleons the size of your fingertip.
South American mummies were likely brutally murdered 1,000 years ago, and the evidence is still preserved today, a new study finds.
The earliest known mammal was a shrewlike animal that emerged in the Triassic period with the first dinosaurs, a controversial new study claims.
The remains of an extinct lion-size otter have been discovered in Ethiopia, and it's the biggest otter on record, a new study finds.
Giant viruses infect tiny algae in a rare epishelf lake in the Arctic Ocean that's one of the last of its kind.
Hurricanes often have surprisingly common human names that don't sound very threatening. But where do these names come from?