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Researchers: Elephants can tell the difference between human languages

African elephants can differentiate between human languages and move away from those considered a threat, a skill they have honed to survive in the wild, researchers said Monday. The study suggests elephants, already known to be intelligent creatures, are even more sophisticated than previously believed when it comes to understanding human dangers. African elephants

Scientists warn mysterious ozone-destroying chemicals slowing ozone repair over Antarctica

Dozens of mysterious ozone-destroying chemicals may be undermining the recovery of the giant ozone hole over Antarctica, researchers have revealed. The chemicals, which are also extremely potent greenhouse gases, may be leaking from industrial plants or being used illegally, contravening the Montreal protocol which began banning the ozone destroyers in 1987. Scientists said the

First Japanese national assumes command of International Space Station

CAPE CANAVERAL, Fla (Reuters) – Japanese astronaut Koichi Wakata assumed command of the International Space Station on Sunday, the first Japanese national to oversee a manned space mission. Wakata, 50, had been a space station flight engineer since he and two crewmates arrived on November 7. “I am humbled to assume the command of

Why do bubbles expand when you heat them?

Think of a cake. When you put it in the oven, it starts off at a particular volume and then, an hour later, it has risen to perhaps double its size. It is obvious what has happened – the air bubbles that you have carefully folded into the mixture during the preparation and the

One in 100 Americans has chronic hepatitis C infection

At least one percent of Americans are chronically infected with the hepatitis C virus, which over time can severely damage the liver, according to a new study. “Hepatitis C has a severe impact on the health and well-being of millions of Americans, especially baby boomers (those born from 1945 through 1965),” Dr. Scott D.

Study ties troubled sleep to lower brain volume

People who have trouble sleeping tend to have less volume in certain regions of the brain than those without sleep problems, a new study of Persian Gulf War veterans suggests. “People discount the importance of sleep. So many things seem so much more important than a few extra hours of sleep a night,” lead

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