The UN's International Asteroid Warning Network is closely watching comet 3I/ATLAS. Here's why.
Tracking comets accurately is hard. A new effort with the U.N. and NASA aims to better chart these visitors using 3I/ATLAS.
Planet Earth
China's Great Green Wall: The giant artificial forest designed to slow the expansion of 2 deserts
Since 1978, China has planted more than 66 billion trees along its 2,800-mile-long northern border, and it wants to plant 34 billion more over the next 25 years to complete its "Great Green Wall."
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LATEST ARTICLES
archaeology
2,000-year-old shipwreck may be Egyptian 'pleasure barge' from last dynasty of pharaohs
Archaeologists diving off the coast of Alexandria, Egypt, have discovered the remains of a 2,000-year-old "pleasure barge" from the time of the Ptolemaic period.
Brutal lion attack 6,200 years ago severely injured teenager — but somehow he survived, skeleton found in Bulgaria reveals
Extremely rare evidence of a lion attack on a teenage boy's remains suggests the teenager survived the initial trauma but became severely disabled, requiring support from his community.
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Science Spotlight
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Space photo of the week
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Life's Little Mysteries
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Live Science crossword puzzle
Test your knowledge on all things science with our weekly, free crossword puzzle!
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Earth from space
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Health
How are 'traumatic tattoos' made, and do you have one?
Traumatic tattoos aren't like regular ones, and they often involve pencils.
Animals
Cassius the giant crocodile died from sepsis after 40-year-old dormant infection burst from 'abscess,' necropsy reveals
Cassius was an 18-foot-long saltwater crocodile living in captivity in Marineland Crocodile Park in Australia. He died last year at the age of about 120, and we finally know why.
'Very novel and very puzzling': Unknown species of squid spotted burying itself upside down, pretending to be a plant
A new study reveals an unknown species of whiplash squid burying itself upside down in the deep sea — a first-of-its-kind behavior for cephalopods.
18,000 dinosaur tracks discovered along ancient Bolivian coastline — and they set a new record
Researchers have counted 16,600 fossilized dinosaur footprints and 1,378 swim tracks at a site in Bolivia that showcase a variety of behaviors and different theropods from the Cretaceous period.
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Human Behavior
Live Science crossword puzzle #23: Distance around the edge of a circle — 6 down
Science crossword Test your knowledge on all things science with our weekly, free crossword puzzle!
Physics & Mathematics
Historic search for 'huge missing piece' of the universe reveals new secrets of particle physics
Scientists hunted dark matter and solar neutrinos with one of the largest experiments yet. While the neutrinos likely appeared, dark matter results couldn't be confirmed.
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Chemistry
Glue strong enough to tow a car made from used cooking oil
Chemists used waste cooking oil to create a sustainable, super-sticky adhesive that's strong enough to hold up hundreds of pounds of weight.
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Technology
Best sleep headphones 2025: From tiny earbuds and snuggly headbands to pillow speakers
Buying guides These are the best sleep headphones you can buy in every category, from Ozlo Sleepbuds and AcousticSheep SleepPhones V8 to Soundcore Sleep A30.
