32:49
Smog: the sweet smell of success?
For most of a century, industrial and automotive smoke were equated with progress and prosperity. But the cost in human health has been devastatingly high, particularly in developing countries. In this program, Devra Davis, author of When Smoke Ran ...
36:54
Leaded gasoline: trading IQ for octane
As a gasoline additive, lead suppresses engine knock. Lead is also a well-known poison, and yet during the 1920s it was championed over safer alternatives - and even backed by the U.S. surgeon general. Why? This program presents the history of leade...