There has been a study 1. This says to me that time travellers are good at cleaning up after themselves.
Via Hacker News where there is lots of fun discussion.
⬅️ Man stuff :: Can't use the internets today ➡️
Paulʼs weblog - I live some place you've not heard of near Folkestone in the far South. Wed and dad to two, I am a full stack web engineer, + I do js / node, some ruby, other languages ect ect. My hobbies are pubs, running, restaurants, home-automation + other diy jiggery-pokery, history, tree stuff, TV, squirrels, pirates ☠️, lego, + TIME TRAVEL.