Archive: 03/05/2012

LED's efficiency exceeds 100%

(PhysOrg.com) -- For the first time, researchers have demonstrated that an LED can emit more optical power than the electrical power it consumes. Although scientifically intriguing, the results won’t ...

Mar 05, 2012 report
4.2 / 5 (77) 60 | with audio podcast

Small dams, big impact on Mekong River fish: study

Plans to build hydropower dams along small branches of southeast Asia's longest river could have a devastating impact on millions of people who rely on the world's largest inland fishery, scientists said Monday.

Mar 05, 2012
5 / 5 (2) 1

New methods for better purification of wastewater

Before wastewater reaches recipient waters, nutrients must be removed in order to avoid eutrophication and large algal blooms, which may result in serious damage to animal and plant life. Robert Almstrand at the University ...

Mar 05, 2012
4.5 / 5 (2) 0

Space weather: Explosions on Venus

In the grand scheme of the solar system, Venus and Earth are almost the same distance from the sun. Yet the planets differ dramatically: Venus is some 100 times hotter than Earth and its days more than 200 ...

Mar 05, 2012
4.2 / 5 (11) 8 | with audio podcast