Researchers mapping genetic history of the Caribbean

In the island chain called the Lesser Antilles, stretching from the Virgin Islands south to Trinidad and Tobago, a team of researchers lead by Theodore Schurr, an anthropology professor in the University of Pennsylvania's ...

Study shows way to design 'digital' metamaterials

Metamaterials, precisely designed composite materials that have properties not found in natural ones, could be used to make light-bending invisibility cloaks, flat lenses and other otherwise impossible devices.

Chemists make first molecular binding measurement of radon

Even in trace quantities, the radioactive gas radon is very dangerous; it is second only to cigarette smoking as a cause of lung cancer deaths in the United States. The expense and precautions necessary to study it safely ...

Fish fossils reveal how tails evolved

Despite their obvious physical differences, elephants, lizards and trout all have something in common. They possess elongated, flexible structures at the rear of their bodies that we call tails. But a new study by a University ...

Scientists Move Optical Computing Closer to Reality

(PhysOrg.com) -- Scientists at the University of Pennsylvania have theorized a way to increase the speed of pulses of light that bound across chains of tiny metal particles to well past the speed of light by altering the ...

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