TIME

Mon, 14 Feb '22

Answer to Gollum's riddle in "The Hobbit" "This thing all things devours: Birds, beasts, trees, flowers ..."

Sun, 9 Jan '22

Hard thing to do?

Sun, 10 Oct '21

Denominator in the velocity formula

Wed, 8 Sep '21

"Put your pencils down!"

Sun, 23 May '21

It's irreversible