Geoffrey West: The surprising math of cities and corporations | Video on TED.com

Good talk by Geoffrey West on scaling laws in biology and in social entities, such a cities:

Geoffrey West: The surprising math of cities and corporations | Video on TED.com

Saving fuel while plowing

Saving Fuel While Plowing

ScienceDaily (July 25, 2011) — Less friction, less power, less fuel -- plowshares coated with diamond-like carbon (DLC) slide through the soil like a hot knife through butter. As a result, the tractors pulling them need less power and fuel. In some tests the power required has been reduced by more than 30 percent. .....

‪Farewell to the Space Shuttle

‪Kanal von NatureVideoChannel‬‏ - YouTube

Space Shuttles United

To mark the end of NASA’s Space Shuttle Program, Nature Video has released an 8-minute video tribute including all 135 missions.

With the touchdown of Atlantis at Kennedy Space Center last week, NASA’s 30-year program came to an end. The shuttle fleet delivered the Hubble Space Telescope, the International Space Station, and dozens of satellites, space probes, crew and supplies. We trawled through hours of archive footage from NASA, and digitised dozens of VHS tapes, in order to show every single mission in chronological order.

Watch the video free online on the Nature Video YouTube channel.

Gates challenges researchers to reinvent the toilet - SciDev.Net

Gates challenges researchers to reinvent the toilet - SciDev.Net

Back to the very basic recycling technology: How to dispose of human waste.

Tim Harford: Trial, error and the God complex | Video on TED.com

Tim Harford: Trial, error and the God complex | Video on TED.com

Thinking quantitatively about technological progress | KurzweilAI

Thinking quantitatively about technological progress | KurzweilAI

Google Effects on Memory: Cognitive Consequences of Having Information at Our Fingertips

Google Effects on Memory: Cognitive Consequences of Having Information at Our Fingertips