Washington, March 27 : Scientists at the Pentagon have completed the first phase of their plan to regrow soldiers' limbs, by turning human skin into the equivalent of a blastema - a mass of undifferentiated cells that can develop into new body parts.

Now, researchers are on to phase two: turning that cellular glop into a square inch of honest-to-goodness muscle tissue.

The Worcester Polytechnic Institute (WPI) just got a one-year, 570,000 dollars grant from Darpa, the Pentagon's blue-sky research arm, to grow the new tissues.

Washington, Mar 27 : Forget about plugging your iPod or BlackBerry into a power source ever again, for now you can charge these devices just by waving your hand, or stretching your arm, and even by taking a walk.

Scientists at Georgia have now come up with a new technology, called "nanogenerator", that converts mechanical energy from body movements or even the flow of blood in the body into electric energy.

And this electric energy can be used to power a broad range of electronic devices without using batteries.

Washington, March 27 : In a new research, scientists have determined that though chimpanzees share many of our genes, dogs are a better model for understanding human social behavior, as they have lived with us for a long period.

"Shared environment has led to the emergence of functionally shared behavioral features in dogs and humans and, in some cases, functionally analogous underlying cognitive skills," lead author Jozsef Topal explained to Discovery News.

Washington, Mar 27: Love surely hurts - in fact you really can die from a broken heart, say a new research, which has shed light on "broken heart syndrome".

The condition, known medically as Takotsubo cardiomyopathy, was first described by Japanese researchers in the early 1990s. However, it is still a mystery to many in the medical community.

Washington, March 27: Those who think mineral water is “clean” better think again, for a study in Germany has suggested that plastic mineral water bottles contaminate drinking water with estrogenic chemicals.

Martin Wagner and Jorg Oehlmann, from the Department of Aquatic Ecotoxicology at the Goethe University in Frankfurt am Main, analysed commercially available mineral waters, and found evidence of estrogenic compounds leaching out of the plastic packaging into the water.

Washin