Why do some of the national parks in the United States resemble the European Alps? Geologist Dr. Robert Darga answers this question.

Why are some rock formations and animals found on more than one continent? The explanation dates back to the Ice Age.

In this segment, the narrator explains where the name Bryce Canyon came from, and why the sand dunes in the US and the large deserts of the world might be related.

The narrator explains how the breathtaking rock formations of Antelope Canyon came to be, and why mountains around the world can provide a metaphor for human existence.

In recent years, we've seen an increase in the intensity of tropical storms and hurricanes due to global warming. But how and why do hurricanes form? Sigrid provides a basic explanation of this phenomenon.

We continue to explore the phenomenon of hurricanes. Why are they so dangerous? And do they serve any purpose?

This Yabla news broadcast features stories about two different kinds of animals, one enormous and one tiny. Sometimes we can predict how animals will behave, and sometimes not.

Take the pledge to Follow the Frog.
What does it mean to #followthefrog? Choose Rainforest Alliance certified products with the green frog seal.

Watch shoppers navigate the potentially hazardous supermarket aisles. It's a jungle out there! They'll need the frog's help if they want to find sustainably grown products. The green frog seal of approval can help you find Rainforest Alliance Certified™ coffee, tea, chocolate, fruit, paper, furniture and more in your local shops.

The trailer for this documentation shows the mistreatment of sharks by humans. We are reminded that sharks also form a part of nature and as such play an important role and need to be protected.

Eco the Butterfly stars in this 60-second spot now airing on some PBS television stations. It made its debut on PBS affiliate WXXI in Rochester, NY.

Wild Sharks, a film by Sigurd Tesche, follows Professor Samuel Gruber who has been researching sharks for more than fifty years. He founded the Bimini Biological Field Station, called the Sharklab, on Bimini Island in the Bahamas.

During the night, Sam Gruber's team of biologists has captured a young tiger shark, a perfect candidate for their scientific research.

Merve feels lucky to live in Kamloops, a small city in southwest Canada, and you can see why! It’s a beautiful place, surrounded by wilderness on all sides. Merve tells us about the area's mountains, grasslands, rivers and lakes, the gold rush of the late 19th century, and its wealth of fascinating wildlife.

In this beginner-level video, Luana teaches us about plants. She talks about the functions of the various parts of a plant, and offers tips on watering plants that grow indoors and outdoors.