Going Without Gas / Surface Tension / Science Fair

The Nature of Things – Season 21

Going Without Gas: A look at recent developments in designing cars that run on fuels other than petroleum, such as methanol, ethanol, electricity, hydrocarbons and hydrogen. Surface Tension: Observing the molecular properties of surface tension and how soap uses these properties to remove grease. Science Fair: A look at the 1979 Metropolitan Toronto Science Fair, featuring the contestants (ages 12-18), the displays, the judging and the awards presentation