Top of Mind with Julie Rose - Radio Archive, Episode 28 , Segment 6
Episode: Capital Punishment, Anxiety, Ransomware, Learning Styles
- Mar 18, 2015 9:00 pm
- 16:21 mins
(1:26:59) Guest: Paul Westerhoff, environmental engineering professor at Arizona State University We have treasure in a most unlikely place. Researchers have found significant amounts of precious metals in sewage sludge. They say that the valuable metals in bio solids may be worth up to $13-Million per year for a community of 1-Million people.