James Hansen: What Makes A Scientist Take A Stand?
When James Hansen spoke up about climate change in the 1980s, he risked the loss of his job and reputation. But, he says, it was worth it — because he could not be silent about something so important.
Read more on NPR
Làm đẹp Blog 247 April 7, 2017 at 07:59PM
Category Health & Science
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