Browse Objects

Microscopic time-lapse footage of cell division.

This film documents the four stages of a butterfly's life cycle: egg, larva, pupa and adult butterfly.

Defines vitamins, how they work in the human body, and the foods which contain various vitamins. Debunks many myths about vitamins and explains the...

Shows the factors required by green plants for life and growth: sunlight, carbon dioxide, water, and soluble minerals; and describes the process of...