Posted by: Kat on: Tuesday, 12 May 2009
clipped from www.nytimes.com
To understand what is really going on in a colony of ants or bees, Dr. Dornhaus, an assistant professor of ecology and evolutionary biology at the University of Arizona, tracks the little creatures individually — hence the paint and the numbers.
studies of whether the efficiency of ant society, [...]
Posted by: Kat on: Friday, 8 May 2009
clipped from news.nationalgeographic.com
Traditional concrete is brittle and is easily fractured during an earthquake or by overuse.
By contrast, the new concrete composite can bend into a U-shape without breaking. When strained, the material forms hairline cracks, which auto-seal after a few days of light rain.
Dry material exposed by the cracks reacts with rainwater and [...]
