News
- Health & Medicine
Teasing out tea’s heart-healthy effect
Drinking black tea makes a person's blood vessels dilate more easily, which may explain why drinking tea can protect against heart disease.
- Health & Medicine
Big meals boost heart attack risk
Unusually heavy meals boost a person's chance of developing a heart attack, at least among those people who already have risk factors for heart disease.
- Health & Medicine
It’s that time. . .for heart attacks?
A small study of young women already at high risk of having a heart attack suggests that heart attacks are most frequent when estrogen levels are low, soon after a woman's period begins.
- Health & Medicine
New role for cholesterol-lowering drugs
Drugs that lower cholesterol benefit patients who have just had a heart attack or chest pains, regardless of the patient's initial cholesterol levels.
- Health & Medicine
Does vitamin A aid learning?
A lack of Vitamin A may cause learning and memory problems, albeit potentially reversible ones.
By John Travis - Health & Medicine
Old antibiotic takes on Alzheimer’s
An antibiotic that binds copper and zinc may prevent brain deposits that cause Alzheimer's disease.
By John Travis - Health & Medicine
Pesticide tied to Parkinson’s disease
Rodents exposed to massive amounts of the pesticide rotenone develop a condition similar to Parkinson's disease.
By John Travis - Health & Medicine
New sources and uses for stem cells
Human skin and scalp tissue may provide a source of neural stem cells.
By John Travis - Physics
An electron ruler gauges crystal flaws
Electrons ricocheting through a crystal now make it possible for scientists to discern shifts in crystal lattices as small as a hundredth of an atom's width.
By Peter Weiss - Ecosystems
Fly may be depleting U.S. giant silk moths
A parasitic fly introduced to fight gypsy moths starting in 1906 may be an overlooked factor in the declines of giant silk moths.
By Susan Milius - Health & Medicine
Vaccine protects monkeys from Ebola virus
A combination of a DNA vaccine and a vaccine based on a genetically modified common cold virus enables monkeys to resist Ebola virus, the first evidence that an Ebola vaccine works in primates.
By Nathan Seppa -
Certain memories may rest on a good sleep
People who practice a task that demands quick visual processing perform it better on ensuing trials if they are first allowed to get some sleep.
By Bruce Bower