This week, viruses as remnants of a fourth domain of life, a scan of many Tibetan genomes reveals seven new genes potentially related to high-altitude life, and doubts about dark energy with Online News Editor David Grimm.

Danielle Li joins Sarah Crespi to discuss her study quantifying the impact of government funding on innovation by linking patents to U.S. National Institutes of Health grants.

Listen to previous podcasts.

Download the show transcript.

Transcripts courtesy of Scribie.com.

[Image: artubo/iStockphoto; Music: Jeffrey Cook]