Changing minds on charitable giving and a news roundup (31 October 2014)

Ayelet Gneezy discusses trends in charitable giving and how to maximize donations. David Grimm brings stories on an algal virus found in humans, how to stop zooming human population growth, and an avalanche on an asteroid. Hosted by Sarah Crespi. [Img: ISAS/JAXA] Learn more about your ad choices. Visit megaphone.fm/adchoices