Human-powered flight has been a thing since the 1930s! The earliest craft were only barely capable of unassisted takeoffs, but they made some surprising sustai

Human-powered flight has been a thing since the 1930s! The earliest craft were only barely capable of unassisted takeoffs, but they made some surprising sustained flights after an assisted start. By the 60s, they were making real flights after unassisted takeoffs, and the 70s saw them with low-enough power consuption to complete turns and cross-country flights. Now we even have human-powered helicopters!