• The evidence Scientists recently found sediment from nano-diamonds, and other impact materials, around North American sites. These materials could not be created through average processes, says James Kennett, a scientist at the University of California.
• What they think happened Scientists believe that these materials could have impacted the Earth from space 13,000 years ago, causing diamond “rain” that led to the extinction of the wooly mammoth and the early-human Clovis culture in North America.
• The impact theorized“Imagine 1,000 to 10,000 atomic bombs detonating within a few minutes over two continents,” says Allen West, co-author of the Science Magazine paper in which the theory was first put forth. We’re not sure if we really want to. It sounds scary. source

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