5,015 results
- Health & Medicine
The Long Road to Beta Cells
In their quest to cure type 1 diabetes, scientists are finding that turning stem cells into insulin-producing beta cells is a lot harder than it first appeared.
- Health & Medicine
Mother Knows All
Fragments of a fetus' genetic material that leak into a pregnant woman's bloodstream reveal details of early fetal development.
-
Natural-Born Addicts: Brain differences may herald drug addiction
Differences in the behavior and the brain receptors of rats seem to predict which of the rodents will become cocaine addicted.
- Animals
Into Hot Water: Lab test shows that worms seek heat
Worms from deep-sea vents prefer water at temperatures near the upper limit of what animals are known to survive.
- Health & Medicine
Clear the Way: Stenting opens jammed arteries in the brain
Using a tiny mesh cylinder called a stent, doctors can prop open narrowed arteries in the brain much as they do in the heart.
- Health & Medicine
Virus Stopper: Herpes drug dampens HIV infection
An antiviral drug commonly taken for genital herpes seems to suppress HIV in people harboring both pathogens.
-
19707
Scientists seek environments that are weightless, near-perfect vacuums in which to conduct experiments. If genuine cloaking were achieved, I would expect there would be a host of experiments that might be conducted in “perfect darkness”—environments free of various energy wavelengths. Bernard RiceHinsdale, Ill.
- Physics
Electron Superhighway
The remarkable strength and electrical properties of graphene, a chicken-wire network of carbon atoms, make it a promising new material for computer chips.
- Animals
Too Few Jaws: Shark declines let rays overgraze scallops
A shortage of big sharks on the U.S. East Coast is letting their prey flourish, and that prey is going hog wild, demolishing bay scallop populations.
-
Age Becomes Her: Male chimpanzees favor old females as mates
Male chimpanzees in Uganda prefer to mate with older females, a possible sign of males' need to identify successful mothers in a promiscuous mating system.
- Animals
Not-So-Elementary Bee Mystery
Old-style epidemiology casework combines with an array of 21st-century lab tests in the search for clues to the disappearance of honeybees.
-
Why people punish
When punishing criminals, people tend to seek retribution, not deterrence.
