When I heard the world’s longest experiment - the pitch drop - was just down the road from my house, and it was free, I had to take a look.| The Andy T Channel
If you’re not already familiar (and, frankly, are the kind of person who is weird enough to be subscribed to Macroscience), I highly recommend that you immediately stop what you’re doing and visit the Wikipedia page for “long-term experiment”.| www.macroscience.org