CB01

Explains that heat is really a form of motion, a form of kinetic energy and that it can be converted to other forms of energy and transferred through...

The final oral exam in history and social studies at one of Warsaw's high schools. The film illustrates the theatre of social life in Soviet Poland...

A documentary of insect life in meadows and ponds, using incredible close-ups, slow motion, and time-lapse photography. It includes bees collecting...

Cuba, 1961: 250,000 volunteers taught 700,000 people to read and write in one year. 100,000 of the teachers were under 18 years old. Over half were...