Ancient sloths lived in trees, on mountains, in deserts, in boreal forests and on open savannas. Some grew as large as elephants. Illustration by Diego Barletta The largest sloth of all time was the ...

Add Yahoo as a preferred source to see more of our stories on Google. A scientist strapped on climbing gear and lowered themselves into a pit-like cavern in eastern Serbia. Deep in the "underground ...

Along the banks of the Lacantún River, a hollow tree hid two creatures never before reported in Mexico. Just a stone's throw from an "extensive, well‑preserved tract of tropical rain forest," two ...

Add Yahoo as a preferred source to see more of our stories on Google. Scuba divers strapped on their gear and plunged into the darkened water off the coast of Florida. Equipped with flashlights, the ...

As night settled across northern Vietnam, a "large" creature with spines on its belly sat near a waterfall. Its "dark green" eyes scanned the surrounding forest, but it wasn't the only one looking ...

Living nearly 900 meters underwater, this isopod evolved unusual adaptations to thrive in the world’s most food-scarce ...

Divers found colorful sea creatures with “large” eyes off the Canary Islands and Cabo Verde and discovered a new species. Getty Images/iStockphoto Off the coast of Cabo Verde, a diver plunged into the ...

Researchers trekked through the dry and rocky landscape of north Western Australia, using ultraviolet light tools to scan for creatures that might be in the area. That’s when they spotted a yellow, ...

As darkness settled across southern China, a "large" creature with spines on its belly sat in a stream. Its multicolored eyes searched the nearby forest, but it wasn't the only one looking around.