6,867 results
6,867 results for: Bears
- Earth
Here are some big-if-true scientific claims that made headlines in 2023
Hominid cannibalism, “dark stars,” the secrets of Earth’s core and more tantalizing findings will require more evidence before scientists can confirm them as fact.
- Plants
Berkley Walker wants to revamp photosynthesis for a changing climate
Finding ways to make plants work better could help feed a growing population, especially as the planet warms.
- Paleontology
Insect bites in plant fossils reveal leaves could fold shut millions of years ago
The 252-million-year-old fossil leaves have symmetrical holes, which suggest an insect bit through the leaves when they were folded.
- Astronomy
How a 19th century astronomer can help you watch the total solar eclipse
Astronomer Maria Mitchell’s observations of total solar eclipses from more than 100 years ago hold tips that are still relevant for watching an eclipse.
- Animals
These brainless jellyfish use their eyes and bundles of nerves to learn
No brain? No problem for Caribbean box jellyfish. Their seemingly simple nervous systems can learn to avoid obstacles on sight, a study suggests.
- Paleontology
Living fast may have helped mammals like ‘ManBearPig’ dominate
Staying in the womb for a while but being born ready to rock may have helped post-dinosaur mammals take over the planet.
- Planetary Science
Granite likely lurks beneath the moon’s surface
Without plate tectonics or water, granite is hard to make. But a 50-kilometer-wide hunk sits beneath the moon’s surface, lunar orbiter data suggest.
- Tech
50 years ago, a balloon circumnavigated the world for science
A 1973 high-altitude flight kicked off an era of useful stratospheric balloon science. Some scientists worry that heightened concerns over alleged spy balloons might hamper that.
- Life
The Endangered Species Act is turning 50. Has it succeeded?
After 50 years, this landmark law has kept many species alive — but few wild populations have recovered enough to come off the “endangered” list.
- Archaeology
Indigenous input revealed early hints of fiber making in the tropics
To decipher marks on nearly 40,000-year-old stone tools and figure out what they were used for, researchers turned to the Philippines’ Pala’wan people.
- Ecosystems
Some polar bears in Greenland survive on surprisingly little sea ice
“Glacial mélange” could provide a last refuge for some bears as the Earth warms, but climate action is needed to preserve the species, researchers say.
- Microbes
Ancient bacteria could persist beneath Mars’ surface
Radiation-tolerant microbes might be able to survive beneath Mars’ surface for hundreds of millions of years, a new study suggests.
