Breeding and the greening of the landscape are tied to another major spectacle of spring: the mass movements of animals as they take advantage of spring’s bounty. Meet the scientists who track the journeys of animals such as butterflies, birds, bison and bats over vast distances, from winter refuge to spring nesting grounds.
See first-hand how the changing climate might affect crucial connections in nature.
Celebrate spring in this live event broadcast from iconic locations across North America.
Take a global tour of the most fascinating members of the modern horse club.
