(CBS) In this week's latest HealthPop video:
- Scientists have managed to grow sperm on a lab Petri dish for the first time, which raises the question...Why?
- Are paper towels spreading bacteria?
- Can an electronic nose help scientists beat a deadly disease?
Find out all the answers, plus how a pair of twins managed to snag different birth years, from CBSNews.com's Nick Dietz in this week's HealthPop Video.