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Entire television channels broadcast the wonders of the natural world. To gain viewers and sell ads, they rely on lions hauling down zebras, aerial tracking shots of the icy grandeur of Antarctica or more prosaic film of a bear ambling through the woods.

A long-existing speech phenomenon has recently become a big thing among young women. Called vocal fry, it’s a low guttural vibration typically found at the end of sentences. You can hear it in this young reporter's voice.

A long-existing speech phenomenon has recently become a big thing among young women. Called vocal fry, it’s a low guttural vibration typically found at the end of sentences.

TOKYO (Reuters) - Japan declared its tsunami-stricken Fukushima nuclear power plant to be in cold shutdown on Friday, taking a major step to resolving the world's worst nuclear crisis in 25 years but some critics questioned whether the plant was really under control. [More]

Climate change will alter the mix of vegetation on 49 percent of Earth's land surface by the end of this century, scrambling and shifting existing ecosystems, according to a new study. [More]

Climate change will alter the mix of vegetation on 49 percent of Earth's land surface by the end of this century, scrambling and shifting existing ecosystems, according to a new study. [More]

Anopheles mosquito; courtesy of iStockphoto/abadonian In the long fight against malaria , progress finally seems to be coming, if incrementally. The number of people who died from malaria in 2010 fell 5 percent from the previous year and has dropped 26 percent from 2000 levels, according to a new World Health Organization (WHO) report . [More]

Anopheles mosquito; courtesy of iStockphoto/abadonian In the long fight against malaria , progress finally seems to be coming, if incrementally. The number of people who died from malaria in 2010 fell 5 percent from the previous year and has dropped 26 percent from 2000 levels, according to a new World Health Organization (WHO) report . [More]

Alcohol abuse does its neurological damage more quickly in women than in men, new research suggests. The finding adds to a growing body of evidence that is prompting researchers to consider whether the time is ripe for single-gender treatment programs for alcohol-dependent women and men. [More]

Alcohol abuse does its neurological damage more quickly in women than in men, new research suggests. The finding adds to a growing body of evidence that is prompting researchers to consider whether the time is ripe for single-gender treatment programs for alcohol-dependent women and men.

Fitness phenom P90X has sold more than 3 million DVDs since its 2004 debut--and this December, sales will surely rise with the holiday release of P90X2.

Fitness phenom P90X has sold more than 3 million DVDs since its 2004 debut--and this December, sales will surely rise with the holiday release of P90X2.

By Meredith Wadman of Nature magazine In a watershed moment for chimpanzee research, the U.S. [More]

By Meredith Wadman of Nature magazine In a watershed moment for chimpanzee research, the U.S. [More]

None of us can stand perfectly still. No matter how hard we try, our bodies constantly make small adjustments, causing us to sway slightly as we stand. A new study finds that people with bipolar disorder tend to sway more than those who are unaffected, which may lead to new ways to treat and diagnose the illness.