6,909 results
6,909 results for: Bears
- Paleontology
Nanotyrannus was not a teenaged T. rex
A new Nanotyrannus fossil suggests the diminutive dino lived alongside T. rex in the late Cretaceous Period.
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Which animal should scare you more?
Editor in Chief Nancy Shute discusses which should scare you more: sharks or ticks and fungus — and why sharks might actually be the least of your worries.
- Paleontology
Sloths once came in a dizzying array of sizes. Here’s why
A new fossil and DNA analysis traces how dozens of sloth species responded to climate shifts and humans. Just two small tree-dwelling sloths remain today.
- Paleontology
These fossil finds shed new light on the past in 2025
The year's top paleontological wonders ranged from a 540-million-year-old penis worm to a decades-old rodent impression.
- Life
Why these zombie caterpillars can’t stop eating
Sneaky chemistry by a real-life “Last of Us” Cordyceps fungus mind controls its zombie insect victims by convincing them they’re starving.
- Planetary Science
This star offers the earliest peek at the birth of a planetary system like ours
A young sunlike star called HOPS 315 seems to host a swirling disk of gas giving rise to minerals that kick-start the planet formation process.
- Space
A NASA rover finally found Mars’ missing carbon
The Curiosity rover identified hidden caches of the mineral siderite, which could help explain why Mars lost its habitable climate.
- Chemistry
Modified bacteria convert plastic waste into pain reliever
With genetic tweaks, E. coli turned 92 percent of broken-down plastic into acetaminophen, charting a path to upcycle plastic waste sustainably.
- Archaeology
Neandertals may have hunted in horse-trapping teams 200,000 years ago
A revised age for a German site indicates that our evolutionary cousins organized horse ambushes around 200,000 years ago.
- Artificial Intelligence
A look under the hood of DeepSeek’s AI models doesn’t provide all the answers
A peer-reviewed paper about Chinese startup DeepSeek's models explains their training approach but not how they work through intermediate steps.
- Archaeology
A 43,000-year-old Neandertal fingerprint has been found in Spain
An ochre dot in Spain may hold one of the oldest, most complete Neandertal fingerprints, hinting at symbolic behavior in our ancient relatives.
- Archaeology
Stone Age hunter-gatherers may have been surprisingly skilled seafarers
New archaeological finds in Malta add to an emerging theory that early Stone Age humans cruised the open seas.
