Sen. Tom Coburn, Oklahoma Republican, says he has documented proof of $3 billion worth of waste and mismanagement by the National Science Foundation. The 73-page report to taxpayers by researchers is annotated with more than 350 footnotes. (Associated Press)

Sen. Tom Coburn, Oklahoma Republican, says he has documented proof of $3 billion worth of waste and mismanagement by the National Science Foundation. The 73-page report to taxpayers by researchers is annotated with more than 350 footnotes. (Associated Press)