Drug resistant bacteria or superbugs are bacteria that have become resistant to antibiotics. This clip discusses how superbugs form and scientists are trying to find ways to fight off these super bugs.

Contextualizes and describes Gothic architecture, particularly in England and England's rise to prominence out of the Middle Ages.

The civilians of Bedford Falls all chip in to do their part to support the war. They begin their work with organizations such as the American Red Cross, United Services Organization (USO), and the Draft Board. Several of them crossed entirely into fighting the war. All involvement with the war wove its way into normal, day-to-day civilian life.

Dr. Rae Crandall explains the surprising positive effects of fire on plants and how it can be utilized as a way to benefit the ecosystem.

Zach Varmitech spies on the Wild Kratts while they're traveling in the Amazon rainforest. They explain that the rainforest has the highest biodiversity out of any land habitat: it's home to 10% of Earth's creatures. They define it as the amount of plants and animals in a region.