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Number Of Species On Earth Estimated At 8.7 Million

That is a new, estimated total number of species on Earth — the most precise calculation ever offered — with 6.5 million species found on land and 2.2 million (about 25 percent of the total) dwelling in the ocean depths.

Announced today by Census of Marine Life scientists, the figure is based on an innovative, validated analytical technique that dramatically narrows the range of previous estimates. Until now, the number of species on Earth was said to fall somewhere between 3 million and 100 million.

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Cell Phones Could Soon Be Powered By Walking

Taking a stroll may soon be enough to re-charge your mobile phone, after US researchers developed a way to generate electricity from human motion.

Placed in a shoe, the device captures the energy of moving micro droplets and converts it into electrical current. Kinetic charging is already used in some low power devices such as watches and sensors. The University of Wisconsin team published its study in the journal Nature Communications.

“Humans, generally speaking, are very powerful energy-producing machines,” said Professor Tom Krupenkin from the university’s mechanical engineering department.


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