6,864 results
6,864 results for: Bears
- Anthropology
Homo sapiens bones in East Africa are at least 36,000 years older than once thought
Analyses of remnants of a volcanic blast push the age of East Africa’s oldest known H. sapiens fossils at Ethiopia’s Omo site to 233,000 years or more.
- Paleontology
A new saber-toothed mammal was among the first hypercarnivores
A 42-million-year-old jawbone with slicing teeth and a gap to fit saberlike teeth is pegged to a new species of the mysterious Machaeroidine group.
- Life
Even hard-to-kill tardigrades can’t always survive being shot out of a gun
A recent experiment put tardigrades’ indestructibility to the test by firing the critters at speeds up to 1,000 meters per second.
- Earth
Earth is reflecting less light. It’s not clear if that’s a trend
A decrease in Earth’s reflectance shows our planet is absorbing more solar radiation, but it’s not clear if the trend will last.
- Life
Near-invincible tardigrades may see only in black and white
A genetic analysis suggests that water bears don’t have light-sensing proteins to detect ultraviolet light or color.
- Paleontology
Feathers may have helped dinosaurs survive the Triassic mass extinction
New data show that dinosaurs were able to weather freezing conditions about 202 million years ago, probably thanks to warm feathery coats.
- Astronomy
How ‘hot Jupiters’ may get their weirdly tight orbits
Gravitational kicks from other planets and stars can send giant worlds into orbits that bring them close to their suns.
- Paleontology
Scientists are arguing over the identity of a fossilized 10-armed creature
An ancient cephalopod fossil may be the oldest ancestor of octopuses, but the interpretation hinges on the identification of one feature.
- Life
‘Wild Souls’ explores what we owe animals in a human-dominated world
The new book Wild Souls explores the ethical dilemmas of saving Earth’s endangered animals.
- Ecosystems
A Caribbean island gets everyone involved in protecting beloved species
Scientists on Saba are introducing island residents to conservation of Caribbean orchids, red-billed tropicbirds and urchins.
- Neuroscience
How a scientist-artist transformed our view of the brain
The book ‘The Brain in Search of Itself’ chronicles the life of Santiago Ramón y Cajal, who discovered that the brain is made up of discrete cells.
- Animals
Scientists found modern domestic horses’ homeland in southwestern Russia
Two genes tied to endurance and docility may help explain the horses’ success in spreading across Eurasia.
