Guess how many years! Submit guesses in the comments like this (NOT the answers, just an example): 1a) 1876 years b) 603 years c) 814 years 2a) 167 years b) 25 years c) 67 years 3a) 67 years b) 13 years c) 156 years Closest guesses by the end of April will get a prize, however, if you submit the exact answers, you will immediately get disqualified for cheating and your comment will be deleted.
