Is the future of deep-space exploration at risk?
Clip: Season 4 Episode 6 | 4m 39s
Dave Mosher is a science reporter who has written for Scientific American, Popular Mechanics, National Geographic News and Discovery.com. He joins Hari Sreenivasan to discuss how a dwindling supply of plutonium threatens deep space exploration.
Aired: 11/13/17Video has closed captioning.