Complex sentence: The Darwin Awards are a tongue-in-cheek, originating in Usenet newsgroup discussions circa 1985, recognizing individuals who have contributed to human evolution by self-selecting themselves out of the gene pool through putting themselves (unnecessarily) in life-threatening situations.
Split into simpler sentences: The Darwin Awards are a tongue-in-cheek, originating in Usenet newsgroup discussions circa 1985. They recognize individuals who have contributed to human evolution by self-selecting themselves out of the gene pool through putting themselves (unnecessarily) in life-threatening situations.