6,903 results
6,903 results for: Bears
- Chemistry
Cosmic Chemistry Gets Creative
By simulating extraterrestrial impacts on Earth, researchers are firing away at the question of how life started.
- Anthropology
Evolution’s Youth Movement
The fossils of ancient children may provide insights into the evolution of modern Homo sapiens.
- Health & Medicine
Coming to Terms with Death
Some newly recognized forms of cell death might be harnessed to aid people with cancer and other serious diseases.
- Astronomy
A Rocky Bicentennial
Mounting evidence that many asteroids aren't solid rock but collections of loosely bound fragments could have far-reaching implications for elucidating their internal structure, understanding planet formation, and developing strategies to mitigate the threat of one striking Earth.
- Tech
Soaking Up Rays
Although light shines through body parts of a primitive marine sponge much as it does through sophisticated optical fibers for telecommunications, scientists differ on whether sponges hold clues to better fibers for humankind.
- Health & Medicine
Ancient Estrogen
A jawless fish ancestor may have revealed the most ancient of hormones and how current hormones evolved from it.
- Health & Medicine
Immunity’s Eyes
Proteins called toll-like receptors allow human immune cells to detect microbes.
- Plants
Torn to Ribbons in the Desert
Botanists puzzle over one of Earth's oddest plants: the remarkably scraggly Welwitschia of southwestern Africa.
- Health & Medicine
The Seeds of Malaria
By studying the molecular footprints of evolution in parasites and human hosts, geneticists are casting light on when and how malaria became the menace it is.
- Computing
Sneaky Calculations
The same communication system that brings you the Web page of your choice can be exploited to perform computations.
- Earth
The Mountain
Tall, steep slopes, a crest of glacial ice that's larger than that on any other mountain in the lower 48 United States, and a burgeoning population in its surrounding valleys combine to make Washington state's Mt. Rainier the most dangerous volcano in America.
- Paleontology
Turn Your Head and Roar
The analysis of fossils that preserve evidence of diseases that appear to be similar or identical to afflictions that strike modern animals, including humans, could help scientists better grasp the causes and courses of today's ailments.
