Greening of Sahara Desert Triggered Early Human Migrations out of Africa

A team of scientists from the NIOZ Royal Netherlands Institute for Sea Research and the University of Bremen (Germany) has determined that a major change in the climate of the Sahara and Sahel region of North Africa facilitated early human migrations from the African continent. Among the key findings are that the Sahara desert and the Sahel were considerably wetter around 9,000, 50,000 and 120,000 years ago than at present, allowing for the growth of trees instead of grasses.

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Posted in earth, Ecosystem | 3 Comments

NASA’s Survey of Cool Universe

The survey of the comparatively chilly universe will be conducted by NASA’s WISE mission (Wide Infrared Survey Explorer). The mission’s small cryogenic space telescope in a Thermos bottle is scheduled to launch on Dec. 9 from Vandenberg Air Force Base in California. It will complete making an all-sky infrared map by the middle of next year. The catalog is expected to reveal the coolest stars, 100,000 asteroids, and some of the brightest star forming galaxies that are shrouded in dust, among many other targets.

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Da Vinci’s ‘Last Supper’ Gets Digital Makeover

Bright, vivid colors adorned Leonardo da Vinci’s The Last Supper, according to a digital reconstruction of the masterpiece at the exhibition “Leonardo da Vinci’s Workshop” at Discovery Times Square Exposition in New York.Painted to provide monks at the church of Santa Maria delle Grazie in Milan with something to contemplate during meals, the mural is considered one of da Vinci’s greatest works.

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Bioengineers Succeed in Producing Plastics Without the Use of Fossil Fuels

Computer rendering of E. coli bacteria. A newly developed E. coli strain is capable of efficiently producing unnatural polymers, through a one-step fermentation process. (Credit: iStockphoto/Sebastian Kaulitzki)

A team of pioneering South Korean scientists have succeeded in producing the polymers used for everyday plastics through bioengineering, rather than through the use of fossil fuel based chemicals. This groundbreaking research, which may now allow for the production of environmentally conscious plastics, is published in two papers in the journal Biotechnology and Bioengineering.

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