a human hair under microscope February 6, 2015 by WTFFF Master A human hair under microscope – WTF fun facts
how strong is the human bone November 1, 2014 by WTFFF Master How strong is the human bone? – WTF fun facts
human vs computer in chess game July 20, 2014 by WTFFF Master Human VS Computer in chess game – WTF fun facts
first recorded flight in history June 12, 2014 by WTFFF Master First recorded flight in history – WTF fun facts
