An interesting article ... https://phys.org/news/2018-10-tortoise-evolution-big.html Jamie
Oct 24, 2018 #1 jsheffield Well-Known Member Moderator 5 Year Member Joined Sep 29, 2018 Messages 3,113 Location (City and/or State) Westmoreland, NH An interesting article ... https://phys.org/news/2018-10-tortoise-evolution-big.html Jamie