Sky Monsters

Earth teems with a staggering variety of animals, including 9,000 kinds of birds, 28,000 types of fish, and more than 350,000 species of beetles. What explains this explosion of living creatures—1.4 million different species discovered so far, with perhaps another 50 million to go? The source of life's endless forms was a profound mystery until Charles Darwin brought forth his revolutionary idea of natural selection. But Darwin's radical insights raised as many questions as they answered. What actually drives evolution and turns one species into another? To what degree do different animals rely on the same genetic toolkit? And how did we evolve?

The captivating tales of the people and events behind one of humanity's greatest achievements in exploration: NASA's Voyager mission.

PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and technology, and highlights the people involved in scientific pursuits.

Take flight on an exhilarating ride with elite winged predators. Humans have had a unique relationship with raptors, nature’s aerial killing machines, for more than four thousand years, first through the ancient sport of falconry, and, more recently, as scientists and engineers have turned to these mighty birds for inspiration for the latest in aircraft design.