6,899 results
6,899 results for: Bears
- Life
Chill turns monarchs north
Temperature manipulation appears to solve mystery of what triggers migratory butterflies’ homeward trip.
- Chemistry
Caffeine’s buzz attracts bees to flowers
Nectar of some blooms carries the drug, which improves bee memory.
- Life
Dinosaur embryos were restless, speedy growers
Hundreds of fossils found in China suggest some unhatched dinos kicked their legs.
- Anthropology
American Association of Physical Anthropologists meeting
Perhaps the oldest swatch of hominid skin yet found and –tzi the iceman’s Neandertal genetics are among the highlights from the physical anthropology meeting.
- Humans
Human ancestors had taste for meat, brains
A mix of hunting and scavenging fed carnivorous cravings of early Homo species.
- Earth
Toxic waste sites may cause health problems for millions
Exposures to lead and chromium represent particular problems, study finds in India, Indonesia and Philippines.
- Life
Fossils point to ancient ape-monkey split
Apes and monkeys split from a common ancestor more than 25 million years ago, fossil finds suggest.
- Plants
Giant genomes felled by DNA sequencing advances
Complete genetic blueprints have been collected for several conifer species.
- Life
Complex life hit freshwater early
Tiny fossils in Scottish rock show that cells with nuclei had spread beyond the seas by a billion years ago.
- Humans
Stone Age cold case baffles scientists
Stone-tool makers who hunkered down near Arctic Circle left uncertain clues to their identity.
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- Animals
Just turn your back, Mom
A female in a species of legless amphibians called caecilians nourishes her youngsters by letting them eat the skin off her back.
