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  • Christopher Hitchens Quote - Why do humans exist? A major part of the answer: because Pikaia Gracilens survived the Burgess decimation. Download This Image
  • Christopher Hitchens Quote - Why do humans exist? A major part of the answer: because Pikaia Gracilens survived the Burgess decimation.
  • Christopher Hitchens Quote - Why do humans exist? A major part of the answer: because Pikaia Gracilens survived the Burgess decimation.
  • Christopher Hitchens Quote - Why do humans exist? A major part of the answer: because Pikaia Gracilens survived the Burgess decimation.
  • Christopher Hitchens Quote - Why do humans exist? A major part of the answer: because Pikaia Gracilens survived the Burgess decimation.
  • Christopher Hitchens Quote - Why do humans exist? A major part of the answer: because Pikaia Gracilens survived the Burgess decimation.
  1. black
  2. grey
  3. blue
  4. red
  5. brown
  6. white

Why do humans exist? A major part of the answer: because Pikaia Gracilens survived the Burgess decimation.