Scientific American: The People's Climate March may end up being the biggest protest to urge action to restrain global warming yet. The march in New York City on September 21 is predicted to draw more than 100,000 people, which would top the tens of thousands who showed up in Copenhagen back in 2009. But how many scientists, whether they study climate change or not, will be there?
The idea of the march--first proposed by writer and activist Bill McKibben of 350.org--is intended to remind world leaders gathering in...