An archeology discovery in Africa suggests that Stone Age humans had an understanding of basic chemistry

An archeology discovery in Africa suggests that Stone Age humans had an understanding of some basic but complicated chemistry.

Archaeologists have found evidence that, as long ago as 100,000 years, people used a specific recipe to create a mixture based on the iron-rich ochre pigment. The findings, published in the journal Science, “push back by 20,000 or 30,000 years” the evidence for when Homo sapiens evolved complex cognition, says Christopher Henshilwood of the universities of Bergen in Norway and Witwatersrand in Johannesburg, South Africa, who led the work. “This isn’t just a chance mixture, it is early chemistry. It suggests conceptual and probably cognitive abilities which are the equivalent of modern humans,” he says.

0 comments

Space News suggests Congress use the billions for NASA’s heavy-lift rocket to fund JWST

In an editorial yesterday Space News suggested that Congress use the billions it is allocating for NASA’s heavy-lift rocket to fund the James Webb Space Telescope instead.

This is not surprising. Webb already has a strong constiuency (astronomers, the public) while the Space Launch System has little support outside of Congress and the specific aerospace contractors who want the work. With tight budgets as far as the eye can see into the future, and the likelihood that Congress is going to become more fiscal conservative after the next election, it would not shock me in the slightest if SLS gets eliminated and the money is given to Webb. And if the SpaceX and Orbital Sciences cargo missions to ISS go well then cutting SLS would almost be a certainty, as this success would demonstrate that these private companies should be able to replace SLS for a tenth of the cost.

And I also think this would be a much wiser use of the taxpayers money.

2 comments

Sierra Nevada’s Dream Chaser to get its first test flight in the summer of 2012

Dream Chaser, Sierra Nevada’s space plane, is to get its first test flight this coming summer.

For the unmanned test flight, it will be carried into the skies by WhiteKnightTwo, the carrier aircraft for the commercial suborbital passenger ship SpaceShipTwo, backed by Virgin Galactic, a U.S. company owned by Richard Branson’s London-based Virgin Group.

1 comment

A UN report says that nearly one billion people are hungry because of biofuels such as ethanol from corn

A UN report this week says that nearly one billion people are hungry, partly because of biofuels such as ethanol from corn.

The findings are echoed in a report published today by the International Food Policy Research Institute (IFPRI), based in Washington DC. Maximo Torero, one of the report’s authors, says policymakers must β€œcurtail biofuels subsidies” and β€œdiscourage the use of food crops in biofuel production” to limit food price volatility.

4 comments
1 32 33 34 35 36 158