Archive: 10/11/2011

How to count nanoparticles

Nanoparticles of a substance can be counted and the size distribution can be determined by dispersing the nanoparticles into a gas. But some nanoparticles tend to aggregate when the surrounding conditions change. Scientists ...

Oct 11, 2011
4 / 5 (1) 0

The strange rubbing boulders of the Atacama

A geologist's sharp eyes and upset stomach has led to the discovery, and almost too-close encounter, with an otherworldly geological process operating in a remote corner of northern Chile's Atacama Desert.

Oct 11, 2011
4.9 / 5 (23) 45 | with audio podcast

Young S. Africans 'use MXit to talk to strangers'

Three quarters of young people regularly talk to strangers on the South African social network MXit, raising concerns about the risks for young people on the mobile Internet, according to a study Tuesday.

Oct 11, 2011
1 / 5 (2) 0

Light can detect pre-cancerous colon cells

After demonstrating that light accurately detected pre-cancerous cells in the lining of the esophagus, Duke University bioengineers turned their technology to the colon and have achieved similar results in a series of preliminary ...

Oct 11, 2011
5 / 5 (2) 1 | with audio podcast

Social media companies 'friend' politics

(AP) -- Social media companies have "friended" the 2012 presidential contest at a level almost unimaginable just four years ago, hosting debates and sponsoring presidential town halls while remaining indispensable ...

Oct 11, 2011
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