Ask the Doctor

David Attenborough reveals the surprising truth about the cold-blooded lives of reptiles and amphibians. These animals are as dramatic, as colourful and as tender as any other animals.

The series will explore dynamics of life on the reef and beyond via a clown fish.

MythBusters is a science entertainment television program created and produced by Australia's Beyond Television Productions for the Discovery Channel. The show's hosts, special effects experts Adam Savage and Jamie Hyneman, use elements of the scientific method to test the validity of rumors, myths, movie scenes, adages, Internet videos, and news stories.

Carl Sagan covers a wide range of scientific subjects, including the origin of life and a perspective of our place in the universe.

Profiles of some of the men who choose to live off the grid in the unspoiled wilderness, where dangers like mudslides, falling trees and bears are all part of everyday life.

Few countries in South America can boast to have such contrast and variety as Argentina. Diverse habitats such as Patagonia's bleak steppe, soaring Andean snowcaps, vast salt pans, lush rainforest around Iguazu Falls, steamy marshlands of Ibera, and grasslands of the Pampas support an astonishing range of wildlife - from penguins, whales and seals to condors, armadillos and guanacos.

All In Earth's 4 billion year history, nature has solved all of lifes problems, from the highest mountain to the deepest ocean. Evolution is the ultimate inventor and many of mans most clever engineering solutions have exact counterparts in nature. In three amazing episodes, NatureTech views our world with fresh eyes, where nature and technology stand hand in hand.

Since the Big Bang 13.8 billion years ago, light has sculpted the cosmos. It traverses the void, interacts with matter, and dances with shadows. It multiplies and proliferates, offering the world ever more complex and luminous structures. If it could speak, what would it tell us?

Traverse the planet’s richest, most diverse woodlands, from the tropics to the poles and everywhere in between. Get to know the wild residents of these magical ecosystems and learn how forests connect and nurture the lives of countless species.

The stories behind innovations such as TV, radio, phones, airplanes, motorcycles and power tools as well as the inventors including Nikola Tesla, William Harley, Alexander Graham Bell, Duncan Black and Alonzo Decker.

Every day we are inundated with information. Can facts still be distinguished from fables? With a nod to today's 'do your own research' internet culture, Marijn, Joep and Tim invent their own experiments, of which they are part. They have one goal: to find out the truth once and for all.

Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.