17/10/2013

Why lithium-ion-batteries fail

Materials in lithium ion battery electrodes expand and contract during charge and discharge. These volume changes drive particle fracture, which shortens battery lifetime. A group of ETH scientists together with colleagues ...

Frog-killing fungus paralyzes amphibian immune response

A fungus that is killing frogs and other amphibians around the world releases a toxic factor that disables the amphibian immune response, Vanderbilt University investigators report Oct. 18 in the journal Science.

Researchers rewrite an entire genome—and add a healthy twist

Scientists from Yale and Harvard have recoded the entire genome of an organism and improved a bacterium's ability to resist viruses, a dramatic demonstration of the potential of rewriting an organism's genetic code.

Mysterious ancient human crossed Wallace's Line

Scientists have proposed that the most recently discovered ancient human relatives—the Denisovans—somehow managed to cross one of the world's most prominent marine barriers in Indonesia, and later interbred with modern ...

Astronomers see misaligned planets in distant system

Using data from NASA's Kepler space telescope, an international team of astronomers has discovered a distant planetary system featuring multiple planets orbiting at a severe tilt to their host star.

Ukrainians protest Chevron's shale gas plans

Hundreds of Ukrainians protested Thursday against US energy giant Chevron's plans to explore for shale gas, seen as vital to the ex-Soviet country's plans to ease its energy dependence on Russia.

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