Before alarm clocks were invented, there was a profession called a knocker-up, which involved going from client to client and tapping on their windows (or banging on their doors) with long sticks until they were awake. It lasted into the 1920s. […]
Read More… from Knockers-up: waking up the Industrial Britain’s Workers in 1900-1941
What makes you sleep? Okay, we know it seems like a simple question with a simple answer, but scientists have yet to completely understand it. In reality, it should have been on our list of the 25 greatest historical mysteries. Researchers have been able to track brain waves and learn a little bit about what goes on in our heads at night using advanced technology for the last few decades. […]
