6,773 results
6,773 results for: Bears
- Animals
Polar bears sometimes bludgeon walruses to death with stones or ice
Inuit reports of polar bears using tools to kill walruses were historically dismissed as stories, but new research suggests the behavior does occur.
- Animals
Whale sharks may be the world’s largest omnivores
An analysis of the sharks’ skin shows that the animals eat and digest algae.
- Paleontology
Glowing spider fossils may exist thanks to tiny algae’s goo
Analyzing 22-million-year-old spider fossils from France revealed that they were covered in a tarry black substance that fluoresces.
- Space
What has Perseverance found in two years on Mars?
NASA's Perseverance rover has turned up volcanic rocks, signs of flowing water and some of the materials necessary for life.
- Anthropology
North America’s oldest skull surgery dates to at least 3,000 years ago
Bone regrowth suggests the man, who lived in what’s now Alabama, survived a procedure to treat brain swelling by scraping a hole out of his forehead.
- Anthropology
A surprising food may have been a staple of the real Paleo diet: rotten meat
The realization that people have long eaten putrid foods has archaeologists rethinking what Neandertals and other ancient hominids ate.
- Space
Six months in space leads to a decade’s worth of long-term bone loss
Even after a year of recovery in Earth’s gravity, astronauts who’d been in space six months or more still had bone loss equal to a decade of aging.
- Health & Medicine
How living in a pandemic distorts our sense of time
The pandemic has distorted people’s perception of time. That could have implications for collective well-being.
- Astronomy
‘Goldilocks’ stars may pose challenges for any nearby habitable planets
Orange dwarfs emit far-ultraviolet light long after birth, stressing the atmospheres of potentially life-bearing worlds.
- Animals
Here are 7 incredible things we learned this year that animals can do
From wielding weapons to walking on the underside of water, these are the creature capabilities that most impressed us in 2021.
- Anthropology
Famine and disease may have driven ancient Europeans’ lactose tolerance
Dealing with food shortages and infections over thousands of years, not widespread milk consumption, may be how an ability to digest dairy evolved.
- Paleontology
Pterosaurs may have had brightly colored feathers on their heads
The fossil skull of a flying reptile hints that feathers originated about 100 million years earlier than scientists thought.
