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Japan Researchers Grow Tooth in Mouse Kidney

Japanese bio engineers have succeeded in growing a tooth from cells implanted into a mouse kidney, using a technique that could create replacement organs faster than previously tested methods.

Biologists have previously cultivated teeth in a laboratory and successfully transplanted them into the jaws of mice, but Japanese researchers have hailed the latest development as offering much faster growth rates.

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Nepal to Measure Up Mount Everest

Nepal's government has ordered a new measurement of Mount Everest to determine exactly how high the world's highest mountain is, an official said Wednesday.

Nepal has continued to recognize the decades-old measurement of 29,028 feet (8,448 meters). However, there have been other claims recently by China and western climbers.

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Rare White Bird Lifts Hopes for N.Z. Kiwis

An expectant silence hangs over the Pukaha bird sanctuary as hundreds of spectators await a glimpse of a rare white kiwi, a bird held sacred by New Zealand's indigenous Maori people.

A collective sigh follows his unveiling to the crowd, although this appears to be prompted more by the chick's cute appearance than any mystical qualities.

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Borneo Rainbow Toad Seen for 1st Time in 87 Years

Scientists scouring the mountains of Borneo spotted a toad species last seen in 1924 by European explorers and provided the world with the first photographs of the colorful, spindly legged creature, a researcher said Thursday.

In recent years, the Washington-based Conservation International placed the Sambas stream toad, also known as the Bornean rainbow toad, on a world "Top 10 Most Wanted Lost Frogs" and voiced fears it might be extinct.

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Being The Top Ranking Baboon is a High-Stress Job

Life is tough for the top baboon.

Oh sure, you're No. 1 so you get the best food and girl baboons. But there's also all that pressure to defend your status.

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Loss of Big Predators Disrupts Earth Ecosystem

Large predators like sharks, lions and wolves are on the decline worldwide, a trend that is disrupting the Earth's ecosystem in all kinds of unusual ways, researchers said Thursday.

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Science Seeks Ways to Take Sting Out of Sunburn

If you have been to the the beach, chances are you have experienced an unfortunate rite of summer: The sunburn. Skin so swollen it hurts to bend. The heat that rises from reddened shoulders. The "ow, ow, ow" from the shower after you thought the pain had faded.

For all the creams that promise to soothe, there aren't super treatments for a sunburn. Dermatologists say the best bet: Some of the same pills you pop for a headache — like the ibuprofen found in Motrin and Advil, or naproxen brands such as Aleve.

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Nike, Adidas Suppliers 'Polluting China Rivers'

Environmental campaigners Wednesday accused suppliers to major clothing brands including Adidas and Nike of poisoning China's major rivers with hazardous chemicals linked to hormonal problems.

Greenpeace said eight samples of wastewater discharge from two factories in the Yangtze and Pearl River deltas, identified as suppliers for the brands, contained "a cocktail of hazardous chemicals".

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Global Warming: Cities, Too, are Carbon 'Sinks'

Scientists on Tuesday offered a slender piece of good news about global warming, reporting that cities can be of surprising help in soaking up carbon dioxide (CO2), the principal greenhouse gas.

Around four percent of the world's land surface is defined as urbanized, a figure expected to surge as the planet's human population rises from seven billion this year to as much as 9.5 billion by mid-century.

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'Death By Plastic': Is Ocean Garbage Killing Whales?

Millions of tons of plastic debris dumped each year in the world's oceans could pose a lethal threat to whales, according to a scientific assessment to be presented at a key international whaling forum this week.

A review of research literature from the last two decades reveals hundreds of cases in which cetaceans -- an order including 80-odd species of whales, dolphins and porpoises -- have been sickened or killed by marine litter.

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