They gallop and trot, whinny and neigh, capturing our imagination -- and our hearts. Indeed, horses are said to have done more to change human history than any other domestic animal.
In Alaska's great Iditarod sled dog race, almost no factor is more important than the relationship forged between the mushers and their dogs. Their extraordinary bond can mean more than win or lose - it can mean life or death.
There is a great deal we can learn from our fellow creatures. Their understanding of the world pre-dates our own, and carries with it extraordinary abilities to heal, communicate, and transform our lives.
In the dry scrublands of southern Africa, the fast felines are falling behind in the most important contest they've ever entered: the race for survival.
Seasonal changes impel a wide variety of creatures to begin their epic migrations to ancient feeding, mating, and breeding grounds, sometimes covering thousands of miles and employing ingenious methods to reach their destinations.
Explore a broad range of creatures with astonishing abilities, from the redwing blackbird, whose brain dramatically changes shape, to a fungus that transforms itself into something resembling a stalk.
Beneath Florida lies the world's largest known system of springs. These springs shelter strange life forms and dot the land above it with outlets of water that once was as pure as any found on this planet.
