NPR: This is SCIENCE FRIDAY from NPR. I’m Ira Flatow. Up first this hour: Has the environmental movement lost its mojo? The election of President Obama two years ago was supposed to be a turning point, when Congress and the White House would finally act on climate change legislation. Here’s the president speaking in 2008 to the Global Climate Summit, right after he was elected, saying that while a number of businesses were doing their part to fight global warming by investing in clean …