Explores the effect of climate change on the polar ice caps and the animals that live in the Arctic environment.

Butterflies are perhaps the world's most beloved insects. But beneath their colorful charm, there's a wealth of hidden scientific secrets that show butterflies to be smarter and more resilient than we ever imagined.

From the moment humans mounted horses 6,000 years ago, these magnificent animals helped shape the world by allowing mankind to explore, conquer, and flourish on horseback. Join anthropologist Niobe Thompson on a global journey to examine the evolution of horsepower, discover the mysterious origins of the incredible partnership, and witness the enduring love of 400 breeds of horses today.