Trump-appointed National Science Foundation director quits: ‘I have done all I can’

The head of the US National Science Foundation, a $9 billion agency charged with advancing discoveries across the scientific spectrum, resigned Thursday amid sweeping changes spearheaded by the current Trump administration.

​ The head of the US National Science Foundation, a $9 billion agency charged with advancing discoveries across the scientific spectrum, resigned Thursday amid sweeping changes spearheaded by the current Trump administration. Read More Breaking News, Latest News and Videos | CNN