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By studying fossilized Neanderthal bones, scientists have determined that this species was extremely promiscuous. If they were having this much fun, why did they die out? Researchers have formed an image of sexy Neanderthals from the fact that the length of their second finger bones (the finger next to the index finger) show evidence of exposure to prenatal androgens, which produce high levels of testosterone and are important in the development of male characteristics such as aggression and promiscuity. In contrast, early homo erectus (our ancestors)–dating from approximately 3 to 4 million years ago–were likely to be monogamous.read more

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People who have strokes who are admitted to the hospital on a weekend are more likely to die compared to people admitted on a weekday. Researcher Moira K. Kapral says that, "Stroke severity is not necessarily the reason for this discrepancy." Her study found that seven days after a stroke, people seen on weekends had an 8% percent risk of dying compared to a 7% percent risk of dying for those seen on weekdays. The results stayed the same regardless of age, gender, stroke severity, other medical conditions and the use of blood clot-busting medications. The reason for the differences in rates could be due to hospital staffing, limited access to specialists and procedures done outside of regular hours.
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Your doctor and dentist are careful not to give you too many X-rays, but a new report says that Homeland Security has bought 500 mobile X-ray vans that can scan cars, trucks and homes without the drivers or residents even knowing it’s been done. The vans contain Z Backscatter X-ray devices, which aim a powerful X-ray beam that can of penetrate 14 inches of steel, and mobile X-ray machines, that can be hidden in a pocket or purse, will soon be ubiquitous among law-enforcement personnel.
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There are all kinds of evolution. How did we become human when we share 98% of our genes with chimps? Part of this has to do with superior brain power–we have at least 300,000 brain cells for each neuron in a fruit fly brain and supercomputers have more brain power than we do, which is why IBM’s Deep Blue supercomputer was able to defeat chess champion Garry Kasparov.read more