Search Results for: Bears
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6,773 results for: Bears
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Genetics
Ancient DNA tells of two origins for dogs
Genetic analysis of an ancient Irish mutt reveals complicated history of dog domestication.
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Tech
For robots, artificial intelligence gets physical
Physical intelligence makes robots able to sense of the world around them.
By Meghan Rosen -
Archaeology
Babylonians used geometry to track Jupiter’s movements
Babylonians took a geometric leap to track Jupiter’s movements long before European astronomers did.
By Bruce Bower -
Earth
Pioneering geologist sought to demystify volcanic eruptions
In The Last Volcano, a geologist profiles Thomas Jaggar, one of the 20th century’s most influential volcanologists.
By Sid Perkins -
Anthropology
Hobbits died out earlier than thought
Tiny Indonesian hominids disappeared earlier than thought, around 50,000 years ago.
By Bruce Bower -
Paleontology
Fossil worm adds head to its spiny appearance
Hallucigenia sparsa gives hints to how some animals ended up with teeth in their guts and platelike pieces around their mouths.
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Humans
Animal hybrids may hold clues to Neandertal-human interbreeding
The physical effects of interbreeding among animals may offer clues to Neandertals’ genetic mark on humans.
By Bruce Bower -
Neuroscience
Itch-busting nerve cells could block urge to scratch
A group of nerve cells in the spinal cord keep mechanical itch in check.
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Animals
Why we need predators
It might be easy to say that we should wipe out species that can kill us. But the effects of such action would be far ranging.
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Anthropology
Ancient hominids used wooden spears to fend off big cats
Saber-toothed cat remains suggest ancient hominids used wooden spears as defensive weapons.
By Bruce Bower -
Archaeology
Ancient stone tools raise tantalizing questions over who colonized Sulawesi
Hominids reached an island not far from hobbits’ home by around 200,000 years ago.
By Bruce Bower -
Astronomy
Big exoplanet may be surrounded by helium
Warm Neptune-sized exoplanet might have atmospheres filled with helium.