A new study has found that advanced crafting of stone spearheads contributed to the development of new ways of human thinking and behaving 80,000 years ago.

Archaeologists at Lund University found that the technology took a long time to acquire, required step-by-step planning and increased social interaction across the generations, which led to the human brain developing new abilities.

The findings show that people at that time used advanced technology for the production of spearheads and that the complicated crafting process developed the working memory and social life of humans.

“When the technology was passed from one generation to the next, from adults to children, it became part of a cultural learning process which created a socially more advanced society than before,” Anders Hogberg, PhD, said.

“This affected the development of the human brain and cognitive ability,” he stated.

The technology led to increased social interaction within and across the generations. This ha

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The finding, published online June 20 in the Journal of Clinical Oncology, adds to recent research that exercise improves how cancer patients feel during and after treatments, and may also extend their lives.

“This provides some initial evidence that we need to look at the effects of exercise interventions, not only to ease symptoms but also to impact progression and survival,” said Lee W.

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Scientists have estimated that wind turbines that fly, swoop and float have the ability to provide 100 times more the amount needed to power the whole world annually.

Flying, swooping and floating turbines are being developed to turn high-altitude winds into electricity.

Cristina Archer, an atmospheric scientist at the California State University in Chico, said there’s “not a doubt anymore” that high-altitude winds will be tapped for power.

Fort Felker at the National Renewable Energy Laboratory said the industry is 10 years away from making a meaningful contribution to the nation’s electricity demands.

High-altitude wind power is similar to ground wind in the 1970s facing questions but soon to prove its viability, said PJ Shepard of Oroville, Calif.-based Sky WindPower, which is developing a “flying electric generator”.

The lure of high-altitude wind is simple: Wind speed generally increases with its height above the ground as surface friction diminishes. Each time w

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Healthy gut flora microorganisms living in the digestive tract of animals can reduce the risk of obesity, a study says.

The study, done on rats, showed that daily intake of a lactic acid bacteria, which has been given the name Lactobacillus plantarum HEAL19, appears to be able to prevent obesity and reduce the bodys low-level inflammation.

Rats who were given this specific lactic acid bacterium from their time in the uterus up to adult age put on significantly less weight than other rats. Both groups ate the same amount of high-energy food, explains Caroline Karlsson, researcher in food hygiene at Lund University, Sweden.

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