ELEPHANT TOOTHPASTE EXPERIMENT ... AND I THINK WE HAVE JUST THE RIGHT SIZE HERE. WE’VE CONTAINED IT MOSTLY ON OUR BACK END. WE DEFINITELY DIDN’T CONTAIN THE FRONT. SO SPILL IT OVER THE ...

Unlike teeth, tusks keep growing over time. You can even approximate an elephant’s age by comparing its tusk size to others of its age and species. Chemically, there’s no difference between a ...