1. But that hasn't stopped scientists from growing actual human brains in a lab. Starting with nothing but stem cells, scientists in Austria this year managed to create brains equivalent to those in nine-week-old fetuses. These miniature brains are the size of peas and are incapable of thought—so far. The one thing keeping the brains from growing beyond this stage and becoming fully functional is that they have no blood supply.
4. The jobs were ranked based on the following attributes, with much of the data coming from the Bureau of Labor Statistics: “income, outlook, environmental factors, stress and physical demands.”