
A team of doctors working at the University of Munich reported the unusual case of a young man who experiences epileptic seizures every time he tries to solve a sudoku puzzle. The 25-year-old right-handed physical education student was buried in an avalanche during a skiing holiday, as a result of which his brain was deprived of oxygen for some 15 minutes. He then developed shock-like contractions of the muscles in his mouth when he tried to talk, and in his legs when he tried to walk. Several weeks later, while trying to solve Sudoku puzzles, he developed clonic seizures in his left arm. These produce repeated jerking movements, and are far rarer than tonic-clonic seizures, which are typically preceded by muscle stiffness, and cause a total loss of consciousness. In this case, the seizures stopped immediately when the patient stopped solving the Sudoku puzzle. He didn’t experience any seizures when he read a book, wrote something down, or did calculations. (via The Guardian)
An ancient fingerprint is among the clues to a 2,000-year-old invasion of Denmark

More than 2,000 years ago, a mysterious band of attackers descended on an island called Als off Denmark’s coast. Locals seem to have successfully fought back against the marauders and dumped one of their boats—chock-full of weapons—into a bog to celebrate their defeat of the invaders. Remnants of this ancient battle were unearthed in the 1880s by people digging for peat in the Hjortspring bog on Als. Researchers excavated the invaders’ boat in the 1920s and recovered nearly half of it, which provided enough material for a full reconstruction. This ancient wooden plank boat is the only intact vessel of its kind ever discovered in Scandinavia, and it resembles boats depicted around a millennium earlier in Bronze Age rock art. The bog boat still begs a major question: Where did the invaders actually invade from, and when? (via Nautilus)
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