08/03/2010

How to see through opaque materials

New experiments show that it's possible to focus light through opaque materials and detect objects hidden behind them, provided you know enough about the material.

LED streetlights best buy for cities, researchers report

University of Pittsburgh researchers have conducted the first cradle-to-grave assessment of light-emitting diode (LED) streetlights and determined that the increasingly popular lamps strike the best balance between brightness, ...

Violent crime 'race gap' narrows, but persists in US

The U.S. 'race gap' in the commission of violent crime has narrowed substantially, yet persists in many cities - with murder arrest rates for African Americans out-distancing those for whites - concludes a new 80-city study ...

Researchers show how far South American cities moved in quake

The massive magnitude 8.8 earthquake that struck the west coast of Chile last month moved the entire city of Concepcion at least 10 feet to the west, and shifted other parts of South America as far apart as the Falkland Islands ...

Geneva atom smasher seeks dark matter discoveries

(AP) -- The world's largest atom smasher could generate its first scientific breakthrough later this year when operators hope to make discoveries into the elusive nature of dark matter, the director of the European Organization ...

The life and death of online communities

The more heterogeneous the community of an online chat channel, the more chances the channel has to survive over time. This has been concluded in a new joint study carried out by researchers of the University of Haifa and ...

page 4 from 6