Getting our heads around big numbers:

A thousand seconds ago = around ¼ hour ago
A million seconds ago = around 12 days ago
A billion seconds ago = around 32 years ago (1989)
A trillion seconds ago = around 32,000 years ago, during the Pleistocene Epoch (era of cave paintings)

— Laurence Tribe 🇺🇦 ⚖️ (@tribelaw) June 22, 2021