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Could there be such a thing as a perpetual motion machine? Most scientists would say no, but there IS one that is over 300 years old, resting in a museum in Romania. If researchers could figure out how it works, it could pave the way to the creation of car batteries that never run out.

This battery, built by Vasile Karpen, has been operating without stop since 1950. When Karpen built it, he claimed it would last forever. He patented the design in 1922. On the Helium website, Terrence Aym quotes museum director Nicolae Diaconescu as saying, "I admit it’s also hard for me to advance the idea of an overunity generator without sounding ridiculous, even if the object exists."
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Two thousand years ago Mount Vesuvius exploded and destroyed Pompeii. Today, a larger, more deadly supervolcano called Campi Flegrei, on the other side of Naples, shows signs of getting restless. If it erupts, it could wipe out all life in Europe.

Campi Flegrei is an active four-mile-wide sunken volcano which hides beneath the seemingly placid landscape. If (when?) it erupts, it will throw hundreds of billions of cubic feet of volcanic rock up into the atmosphere, in an explosion 200 times greater than that of the Icelandic Eyjafjallajokull volcano, which grounded planes in Europe for a week and cost the world $3 billion.
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Football is a dangerous game, mainly due to head-banging concussions. Now animal experiments suggest that taking the omega-3 fatty acid DHA might offer a new way of protecting against traumatic brain injury. Although only preliminary, the results raise the "intriguing" possibility of preventive treatment with DHA in groups at high risk of concussion and brain injury, such as military personnel and athletes in contact sports.
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