If gridiron were a timeline, w/ Big Bang at one goal, then cavemen to now spans thickness of single turf-blade at other goal.
— Neil deGrasse Tyson (@neiltyson) February 3, 2014
via http://twitter.com/neiltyson
If gridiron were a timeline, w/ Big Bang at one goal, then cavemen to now spans thickness of single turf-blade at other goal.
— Neil deGrasse Tyson (@neiltyson) February 3, 2014
via http://twitter.com/neiltyson