Biology
1950s
13176_29219_scientific_method3
Dark-haired Caucasian man with glasses and a lab coat pours brown…
1950s
13176_29219_scientific_method1
Man in lab coat looks through microscope. Woman in lab coat handles…
1950s
13176_29219_scientific_method2
Close up of moldy petri dish with smoke in the background. Man in…
1970s
13176_0530_Agent_Orange_Protest
Clip shows an agent orange protest/demonstration in San Francisco…
1930s, 1960s
13175_24872_population_growth19
Medical and demographic information is used to explain that population…
1960s
13175_0294_huntinggathering1
Shows how the Neanderthal caveman and the Cro-Magnon family provided…
1960s
13175_0294_huntinggathering2
Shows how the Neanderthal caveman and the Cro-Magnon family provided…