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World Population Set to Hit 9.1 Billion in 2050

At current growth rates, forecasters expect to see a total of 9.1 billion humans on Earth by 2050, although small shifts in the birth rate might add or subtract one billion people. The rise could be slowed without taking any direct measures to control population. The most effective way to reduce fertility rates is to educate women: worldwide, each additional year of female education lowers the average birth rate further

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The Sweet Smell of Chocolate: Sweat, Cabbage and Beef

Chocolate may be the most sought-after treat among trick-or-treaters on Halloween, with little hands grasping for all of the milk- and dark-chocolate morsels they can collect, but the details of its taste and aroma profiles have long eluded scientists.

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People With Sweet Tooths May Be Sweeter

With Halloween around the corner, parents are fretting over what all that candy will do to their little goblins. Well, it might just make them sweeter

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Rare, Deadly October Storm Hangs on in Northeast

By Barbara Goldberg NEW YORK (Reuters) - One of the darkest Halloweens ever loomed for about 3 million households left without power on Sunday by a rare October snowstorm in the Northeast that bedeviled transportation and killed at least eight people.

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The Ductile Helix: "Jumping Genes" May Influence Brain Activity

Mobile DNA molecules that jump from one location in the genome to another may contribute to neurological diseases and could have subtle influences on normal brain function and behavior, according to a study published October 30 in Nature .

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Of Flash Mobs and Four Loko

On an ordinary afternoon at Copenhagen Central Station, a performer sets up a drum in the center of a large hall. A cellist joins him

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The Science of Happiness

Learn the latest psychology behind why it's hard to be happy, and take our quiz to learn how your contentment compares to that in other cultures [More] Presented By: Is your business ready for emergencies?

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The Science of Happiness

Learn the latest psychology behind why it's hard to be happy, and take our quiz to learn how your contentment compares to that in other cultures [More] Presented By: Is your business ready for emergencies?

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Meet Your Newest Ancestor

Most humans think of the placenta as something that gets tossed out after childbirth. In fact, its appearance millions of years ago was a significant evolutionary development that gave rise to the vast majority of mammals alive today, from bats to whales to humans. Until now, scientists believed that placental mammals first appeared some 125 million years ago.

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3-D, Hold the Glasses

Three-dimensional television got a major marketing push nearly two years ago from the consumer electronics and entertainment industries, yet the technology has one major limitation: viewers need special eyeglasses to experience the 3-D effect. Now the marketing experts say that the technology will never catch on in a big way unless viewers can toss the glasses entirely

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