6,907 results
6,907 results for: Bears
- Health & Medicine
Watermelon red means lycopene rich
Watermelon is a far better source of the carotenoid lycopene than tomatoes are and at least as well absorbed by the body.
- Anthropology
Evolution’s Surprise: Fossil find uproots our early ancestors
Researchers announced the discovery of a nearly complete fossil skull, along with jaw fragments and isolated teeth, from the earliest known member of the human evolutionary family, which lived in central Africa between 7 million and 6 million years ago.
- Health & Medicine
Antioxidants for greyhounds? Not a good bet
Antioxidant vitamins that greyhound racers have been giving their animals to boost performance actually slow down the dogs.
- Paleontology
Unknown creature made birdlike tracks
Paleontologists have found a multitude of birdlike footprints left by a yet undiscovered creature in rocks more than 60 million years older than Archaeopteryx, the first bird to have left fossils of its body parts.
- Animals
Hyena androgens exact high cost
Blocking androgens for spotted hyenas before they're born shows that the exposure of a female fetus to male hormones normally takes a heavy physical toll when females bear their own pups.
- Plants
Sunflower genes don’t fit pattern
Comparison between crop and wild sunflower genes suggests that the plant followed an easy route to domestication.
- Health & Medicine
Lung cancer gene has gender bias
The X chromosome's gastrin-releasing peptide receptor gene is turned on by nicotine to produce a protein that promotes lung cancer, a combination of factors that could explain why women are more susceptible to the disease than men are.
- Health & Medicine
Fused cells hold promise of cancer vaccines
A vaccine composed of tumor cells fused to immune cells has helped several people survive advanced kidney cancer.
-
Lady-killing genes offer pest control
Two new fruit fly lines—with females that die on cue—could lead to changes in pest control.
- Math
Random packing of spheres
A new definition of random packing allows a more consistent and mathematically precise approach to characterizing disordered arrangements of identical spheres.
-
How whales, dolphins, seals dive so deep
The blue whale, bottlenose dolphin, Weddell seal, and elephant seal cut diving energy costs 10 to 50 percent by simply gliding downward.
-
Cooperative strangers turn a mutual profit
In social exchanges, monkeys and people often appear to act according to the principle that "one good turn deserves another."
