Sascha Pare

Visitors at a tiger reserve in India recently filmed an encounter between a tigress and a bear, with the bear charging after the tigress but deciding at the last minute it was not worth the fight.

Iron-rich waters buried beneath Taylor Glacier in East Antarctica are sporadically released in what looks like a bloody mess — but the so-called Blood Falls aren't as gruesome as they first appear and sound.

Researchers have engineered a silk fabric that can suppress noise by either generating sound waves that interfere with the noise or by blocking vibrations that are key to the transmission of sound.

Orcas off the coast of Iberia are spending less time hunting and more time exploring new games thanks to the recent recovery of their favorite prey, Atlantic bluefin tuna.

Europe's awakening Campi Flegrei volcano experienced its biggest seismic swarm in 40 years, with 150 earthquakes rocking the region in southern Italy in the evening of May 20.

The Eye of the Sahara, also known as the Richat structure, stands out like an oversized ammonite among the sand dunes of the Sahara desert in Mauritania.

Icelandic authorities said residents and emergency responders should be ready to evacuate Grindavík at short notice after a new and ongoing eruption on the Reykjanes Peninsula.

Most of the periodical cicadas emerging across the eastern U.S. in this year's rare dual emergence event have blood-red eyes, but sightings of blue-eyed variants have recently been reported.

There is "high potential" for hogs that have gone feral in Canada to cross into South Dakota, North Dakota, Montana and Minnesota, where the pigs could inflict billions of dollars in damage.

Kimberley Wilson has worked in prisons and with patients from all walks of life. Her years of providing therapy suggest improved nutrition could be key to mental health and brain function.

China's southwestern karst landscape is pockmarked with dozens of enormous sinkholes that look like they were made with a cookie cutter — and scientists keep finding new ones.

Snake Island was isolated from the Brazilian mainland at the end of the last ice age, trapping Earth's only known population of highly venomous golden lancehead pit vipers on a rock in the Atlantic.

Japan has announced plans to add fin whales — the second-largest animal on Earth — to its list of commercial whaling species, which currently includes Bryde's, sei and minke whales.

Tree rings suggest the Northern Hemisphere summer of 2023 was the hottest in 2,000 years, with temperatures exceeding those of the coldest summer in the same period by 7 degrees Fahrenheit (3.9 Celsius).

Turkey's magical "fairy chimneys" in Cappadocia were carved out of an ancient volcanic landscape over millions of years before humans turned them into hiding dens.

Atlantic currents slowed dramatically during the Younger Dryas period. By reconstructing those ancient ocean conditions, scientists think they can forecast changes over the next century.

Scientists think Tonga's record-breaking 2022 eruption was triggered by gas building up to a "critical point" rather than by a reaction between magma and seawater as previously assumed.

The Batagay megaslump — a 3,250-foot-wide (990 meters) depression in the permafrost in the Russian Far East — is "actively growing" by a massive amount every year, scientists have found.

Hammer-headed bats are named after the males' oversized boxy heads, which evolved to amplify and project the honking sounds they produce to impress females during courtship displays.

The Cave of Crystals in Chihuahua, Mexico, is buried almost 1,000 feet (300 meters) beneath Earth's surface and contains giant gypsum crystal beams that are up to 37 feet (11 m) long.

Scientists have calculated the rotational speed of asteroid 2024 BX1, which exploded over Berlin earlier this year, by letting it trail in images of the sky. It turns out, 2024 BX1 was spinning faster than any other near-Earth object ever seen.

Northrop Grumman Corporation has built its Manta Ray uncrewed underwater vehicle, which will operate long-duration missions and carry payloads into the ocean depths in partnership with DARPA.