05:35
Risky Business: Impact of HIV, The
Life changed when the dangers of HIV were introduced to our society. No longer could a casual sexual encounter be categorized as "no big deal." Because the virus remains latent for so long, people can transmit the infection through blood or sexual a...
08:31
Occupational Safety and Health: Worker Safety in the Space and Science Industries
Propelled by the Cold War, research and testing of rocket motors and fuels flourished in the mid 1900s, exposing workers to the acute effects of toxic chemicals and the as yet unknown chronic and long term effects. Around the same time, experiments ...