Full Title: "The mystery of the 'rumble in the Indian Ocean': Strange seismic waves that shook the world on November 11 baffle researchers" Mysterious seismic waves in the Indian Ocean that were picked up by monitoring stations from Madagascar to Canada three weeks ago have baffled scientists. Researchers and earthquake enthusiasts who spotted the signals have narrowed down the origin to a region just off the coast of the island Mayotte. The slow waves detected on November 11 rumbled for more than 20 minutes, unbeknownst to most people. They are similar to those typically seen after large earthquakes, which are...