Tourists come to raft the immense Colorado River rapids, but this is no amusement park and there are very real dangers within the canyon’s gorge. Meanwhile, a graceful osprey fishes the turbulent waters, but must also contend with the cunning raven, who is determined to steal his hard-won catch.

The prairie dogs are on constant alert, but the kit fox has a young family to feed, and prairie dogs are certainly on its menu! As the heat rises and birds circle the sky, the creatures below need to assess which may be a threat, but sometimes, not all is as it seems...

For centuries, the Grand Canyon and its river were thought to be impassable, but in the nineteenth century, steep paths were carved into its walls. However, for the agile bighorn sheep and summer visitors like the violet-green swallow, this is still nature’s playground.

The woodpeckers have cleverly used a pine tree to hide the acorns they collect, and are very good at working together. They must simultaneously keep a lookout for predators and guard their wealth from other animals keen to pilfer an easy meal!

One of the rarest birds in the world, and the largest in the Americas, the California condor soars majestically over the canyon. A growing herd of bison roams the north rim, but their presence in the park is ruffling some feathers!

When battle is done, the exhausted bighorns make their way to the canyon rim. But they must be wary, as the canyon is also home to large predators, and a fierce mountain lion is on the prowl. The awe-inspiring vastness of the Grand Canyon attracts numerous tourists, but many will go no further than the lookout points due to the challenging terrain.

There are few places on Earth as breathtakingly spectacular as the Grand Canyon. One of the last great American wildernesses to be charted and explored, this mile deep rift in the landscape has been designated a national park. Among the wildlife to dwell in this remote and often harsh environment are the sure-footed, hard-headed, and sometimes quarrelsome bighorn sheep.

Every tourist that visits the Great Barrier Reef contributes in a small way to the protection of this vast and remote wilderness. We are encouraged to experience for ourselves the wonders of this unique underwater ecosystem, and come away with a deeper understanding.

The Great Barrier Reef: it’s one of the most iconic, most beautiful and most diverse locations on earth. Stretching from Cape York in northernmost Queensland down to Bundaberg on the central coast, this enormous living organism (the world’s largest) is nothing short of breathtaking.

Strict water restrictions come into force for millions of people in California as the US west coast continues to experience a crippling drought.

The group makes a plan to spread word of the Inuit's plight, but there's already a tense situation building, as hungry polar bears enter the village in search of food.

Debbie takes the young reporters along on a hunting trip and shows them one of the last remaining areas for wildlife. We hear more about the strain that a changing climate is placing on these remote and traditional communities.

When a message arrives from an Inuit correspondent, a small team sets off to investigate the environmental changes that threaten the delicate balance of life in the frozen north.

The Gulf Stream plays a big part in maintaining the temperatures we are used to, and Maestro explains that if it is interrupted, parts of the world could become colder as an unexpected result of global warming.

Maestro speaks about the Earth’s atmosphere, and explains how the greenhouse effect is changing the planet’s ability to regulate its own temperature. The kids want to know what is being done about the problem, and what the outcome might be.