NASA set up a webcam so you can watch them build the Mars 2020 rover

NASA's mission to Mars in 2020 is a very, very big deal. After the death of Opportunity a number of months back, NASA has just one rover left on the Red Planet and Curiosity isn't exactly a spring chicken. Curiosity's two-year mission has long since lapsed and the rover has spent nearly 2,500 days on Mars since landing back in 2012. Now, with excitement over the Mars 2020 mission at a fever pitch, NASA is offering us all a seat right inside its Jet Propulsion Laboratory where the rover is slowly...