PARIS — One third of dementia cases can be prevented with some basic lifestyle changes and better education during childhood, said a study published in The Lancet.
MIAMI — A massive asteroid strike that wiped out the dinosaurs millions of years ago created room for frogs to colonize the Earth, said a study Monday that shows how frogs became among the most diverse vertebrates in the world.
VIENNA — Human activity risks contaminating pristine water locked underground for millennia and long thought impervious to pollution, said a study Tuesday that warned of a looming threat to the crucial resource.
WASHINGTON — The eggs of nonavian dinosaurs took three to six months to hatch, a long incubation period that could help explain dinosaurs’ mass extinction 65 million years ago, according to new research.
PARIS, FRANCE — Smokers under 50 are eight times more likely than non-smokers of the same age to have a major heart attack, scientists said Wednesday.