I'm on work experience http://www.promenadedental.com/where-can-i-buy-a-research-paper/ microeconomics homework help  The Department of Commerce counted 7.6 million people working at STEM jobs in 2010, Charette writes. But the National Science Foundation's tally was much higher – 12.4 million people. Why the difference? The NSF included jobs held by health-care workers, psychologists, and social scientists, among other fields that the Department of Commerce didn't factor in.