Hermann Heinzel Ornithologist

They have no roots, no seeds, no flowers, but mosses show immense survival capacities and can suspend their biological activity for long periods....

This 1971 color anti-drug use and abuse film was produced by Concept Films and directed by Brian Kellman for Encyclopedia Britannica. “Weed:...

To show the habitat, life cycle and typical activities of the Barn Swallow.

In this educational film, laboratory demonstrations show the effects of moisture and temperature on the growth of molds. Photomicrography reveals the...

One entry in a series of films produced to make science accessible to the masses—especially children—this film describes the sun in...

An illuminating look inside the lives of the Grucci family, whose Long Island-based fireworks business has been lighting up night skies around the...

"Without leaving his own garden, a man may know the world" - an abstract study of the wildlife found in every garden.

This documentary follows various migratory bird species on their long journeys from their summer homes to the equator and back, covering thousands of...

Through interspersed conversation and prose, this experimental documentary follows a poet and a neuroscientist as they explore the definition of...

A documentary telling the remarkable human story of Stephen Hawking. For the first time, the personal archives and the testimonies of his closest...

The biggest tech revolution of the 21st century isn’t digital, it’s biological. A breakthrough called CRISPR gives us unprecedented...