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Is cannabis a medical cure-all or snake oil? Scientists distinguish the medicine from the myths.

How screens affect our children's development, learning abilities and mental health.

From the Rockies to the Pacific, western Canada has astonishing wildlife and landscapes, some of which have been influenced by early humans.

Scientists are attacking food allergies in new and inventive ways, driven by the alarming increase in the number of people, particularly children, who suffer from them – and can die from them.

Dr. Jennifer Gardy is back. But this time, Dr. Gardy’s journey of scientific discovery will plumb our very hopes and dreams - our quest for self-improvement. Are raw vegetables really better for you? Can you be fat and fit? Should you ditch caffeine? Dr. Gardy puts her own body on the line in lively experiments and scientific investigations to discover whether many popular health claims are science fact or science fiction.

Global temperatures are rising and so are we: millions of young people rise up to demand their right to a livable planet.

Broken genitals and cannibalism. Welcome to the weird and wonderful world of how bugs get busy.

Crews go to great lengths to get amazing shots of wildlife people and weather. Working with scientists is essential.

Join an investigative journey around the world to uncover the mysteries of the most famous dinosaur super-predator: the Tyrannosaurus Rex.

Despite intense archaeological scrutiny, much of the ancient city of Pompeii still remains a mystery. Now a team of archaeologists, scientists, and historians are taking to uncover Pompeii's secrets.

What if each of us could make the symptoms of an illness disappear? Cast a spell so powerful it would actually heal our bodies, help us walk, or breathe better? For centuries placebos have been thought of as just fake medicine, but Brain Magic: The Power of Placebo explores the growing scientific evidence that placebos can have powerful—and real—effects on our minds and bodies.

Killer whales and blue sharks are on the hunt, while amorous fireflies light up the night forest with their dazzling display, as summer reveals Canada’s landscape at the peak of its splendour.

The epic story of three legendary women who fought to save the great apes — and inspired a generation.

The aurora borealis delights and amazes us, but we're just beginning to understand its beauty.

From volcanoes to earthquakes & dust migration to meteorites — scientists reveal how much the Earth changes in 24 hours.

Experience a calf’s first year of life as it grows up in Jasper National Park amid some of the most striking scenery on the planet.

One of the most powerful hallucinogenic drugs on the planet is in a tea made from medicinal plants: it's called ayahuasca. There are studies around the world that say that this indigenous cure may also provide answers as to how to treat Western drug addicts.

Scientist Jennifer Gardy turns her critical eye towards the myths, lies, misunderstandings and errors behind the headlines, putting the science of the daily news to the test both in the lab and on the streets.

A fresh perspective on autism research with the developing "Bacterial Theory" of autism. The fastest-growing developmental disorder in the industrialized world, autism has increased an astounding 600 per cent over the last 20 years. Science cannot say why. Some say it's triggered by environmental factors and point to another intriguing statistic: 70 per cent of kids with autism also have severe gastrointestinal symptoms. Could autism actually begin in the gut? The Autism Enigma looks at the progress of an international group of scientists who are studying the gut's amazingly diverse and powerful microbial ecosystem for clues to the baffling disorder.

The secrets of plant behavior.

The exotic world of fruit and the story of nature, commerce and obsession.

Dr. Mike Cranfield looks at how he managed to be working in a Canadian veterinarian surgery to end up making house calls to some of Africa's most endangered mountain gorillas.

From preening peacocks to promiscuous primates, what do animals reveal about our own sexual behaviour? Explore how sexual diversity and the experience of pleasure itself may be the key to species survival.

Veteran polar bear guide Dennis Compayre goes on a remarkable journey into the world of a polar bear mom and her newborn cubs as they leave the safety of their den for the first time.

Wolves and Buffalo follows the fortunes of one pack of wolves, the Delta Pack. Will the pups survive their first year? Will the packs alpha animals retain their pack position to breed again next year? As they try to bring down the buffalo to keep themselves and their new pups alive what will the future hold for these ancient warriors?

There is a new hybrid species which is part wolf, part coyote.

The biggest archaeological survey ever conducted of the Stonehenge landscape finds new evidence of a lost civilization.

From emus to penguins, meet some of the most devoted stay-at-home animal dads on the planet.

Veteran polar bear guide, Dennis Compayre watches as a mother bear teaches her young cubs to hunt and discovers how they are struggling to adapt to a rapidly warming Arctic.

The Great Pyramid of Egypt may be humanity’s greatest achievement. It’s a skyscraper of stone built without computers or complex machinery. Now the secrets of the pyramid could finally be exposed, thanks to a series of astonishing new findings. Egyptologists are unearthing evidence across the country to reveal a story that tells of more than just how Egypt built a pyramid – they are discovering how the pyramid itself changed Egypt and the world. David Suzuki is joining the experts and scientists on the front-line who are unraveling new clues to the world’s greatest ancient mystery.