Iowa Public Television

All Upcoming Episodes

• What Is a Computer Virus? (#102)

  Topics: how a computer virus causes infection; the three stages of program infection; routes to protection

  • Fri, October 17, 4:30 AM on IPTV

• Why Do Divers Get the Bends? (#103)

  Topics: why we can't breathe underwater; how a regulator helps scuba divers; the dangers of "the bends," plus treatment and prevention

  • Fri, October 17, 4:38 AM on IPTV

• What Causes The Northern Lights? (#107)

  Topics: how the earth resembles a giant magnet; the aurora borealis

  • Fri, November 14, 4:31 AM on IPTV

• Why Don't Skyscrapers Fall Over? (#114)

  Topics: the evolution of the skyscraper; how high buildings can go; role of steel and steel frames; elevator's role in the "race for the sky;" challenge of wind; making a building flexible

  • Fri, November 14, 4:38 AM on IPTV

• Why Do Bears Hibernate and Not Humans? (#104)

  Topics: why humans must endure winter while bears and chipmunks can avoid it by hibernating

  • Tue, November 25, 3:52 AM on IPTV

• Why Does Fluoride Prevent Cavities? (#101)

  Topics: what bacteria are and why they are so dangerous; what eggshells and teeth have in common; what fluoride is and how it prevents cavities

  • Fri, November 28, 4:30 AM on IPTV

• Why Do Golf Balls Have Dimples? (#108)

  Topics: how the golf ball evolved; why a rough ball travels further than a smooth one; impact of air; how to make objects more aerodynamic

  • Fri, November 28, 4:37 AM on IPTV

Past Episodes

These episodes of Inquiring Minds aired in the last few months on Iowa Public Television.

• Why Do Golf Balls Have Dimples? (#108)
• What Causes The Northern Lights? (#107)
• Why Do Clocks Go Clockwise? (#105)
• Why Does Fluoride Prevent Cavities? (#101)

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