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Posted 2 years ago by boyt in category: interesting   Comments (1)


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Posted 1 year ago by boyt in category: interesting   Comments (0)


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Scanning Electron Microscope
Posted 8 months ago by jess88 in category: interesting   Comments (0)



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Here's a technique you can use to start a fire for survival if you having nothing but a water bottle and a bright sunny day.
Posted 8 months ago by DanBe in category: interesting   Comments (0)


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Posted 7 months ago by Landan2010 in category: interesting   Comments (1)