Machines are only getting smarter and more efficient. So much so that they're starting to take over both blue-collar and white-collar jobs. NPR recently posted a guide created by researchers that predicts the chance of our jobs being automated within the next 20 years.

To make their projections, the experts scored jobs across 21 fields on nine possible traits, the four most important being: cleverness, negotiation, helping others, and squeezing into small spaces.

- 9 'future-proof' careers, according to the world's largest job site. "Machines have the potential to make the workplace more efficient, by automating mechanical and routine processes, but humans will always play a key-role at the centre," he said.