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What's Hot This Week Ancient Massive Volcanic Eruption Still Mystifies Charles Choi, LiveScience Contributor A cosmic impact has been ruled out for the volcanic blasts lasting 7 million years. Physicists Entangle 8 Photons in 'Spooky' Experiment John Matson, Scientific American Entangled photons could carry messages across large distances. Sponsored by: Mercury Again Ruled Out as Autism Cause January Brought Warmth and Extremes to the Globe