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By David Cyranoski of Nature magazine Two of the largest studies yet carried out on the genetics of schizophrenia in Chinese populations have turned up three genetic loci, or chromosomal regions, previously not known to be related to the disease.

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

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

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.

What worked well for your company yesterday may not be the best today. Make sure you're getting the best results by putting various parts of your business to the test. You go into a dressing room with 10 pairs of jeans to try on, even though you just need one

What worked well for your company yesterday may not be the best today. Make sure you're getting the best results by putting various parts of your business to the test. You go into a dressing room with 10 pairs of jeans to try on, even though you just need one.

TicketLeap, a online ticket exchange, helps local haunts go hi-tech. In recent years, Halloween haunts have gotten the Hollywood-style treatment, trading up from fog machines and cardboard caskets to CGI and robotics. But there's also been a less glamorous technological boon for haunt proprietors that has helped drive sales: their back-end ticketing systems

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.

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 .

Americans spend nearly $7 billion on Halloween . Mostly on candy, and mostly on chocolate.

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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

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?

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?

Name: Kelli Hoover Title: Professor of entomology, Pennsylvania State University [More]