Ripley's Believe It or Not by John Graziano for October 23, 2014
Elephants have been found to be better at some numerical tasks than chimps or even humans! The ship that torpedoed itself! The HMS Trinidad was struck by one of its own torpedoes in the North Atlantic in 1942 having evaded those fired by a German destroyer. Gladiators had their origins in the Roman practice of forcing slaves to fight to the death at the funerals of their owners.