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By Carina Dennis of Nature magazine Mouse 'avatars' could in future allow physicians to find the most effective cocktail of cancer drugs to combat a particular tumor before giving them to a patient, according to researchers at the annual meeting of the Human Genome Organization (HUGO) in Australia last week. "Using a personalized cancer avatar makes it possible to try out different combinations and make some mistakes before going into the clinic," says Edison Liu, president of HUGO and head of the Jackson Laboratory at Bar Harbor in Maine

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.

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

Which diet is most effective at shedding excess pounds? The answer might surprise you