TV Guide BBC America Sunday

Humanity desperately makes plans to prevent possible extinction as a newly discovered comet journeys along a collision path leading straight toward Earth.

When Sir David Attenborough was in his mid-eighties, many thought he had retired, but in reality, he was revisiting iconic landscapes across the globe.

As Sir David Attenborough continues his adventures across the globe, he stops by the Galápagos Islands and dives into the deepest caves in Borneo.

The remainder of Sir David Attenborough's globetrotting adventures take him from the ancient tropics of China to the depths of the Great Barrier Reef.

Sir David Attenborough reveals how Mammals have conquered the Earth, uncovering the secrets to their success with their intelligence and unique sociability.

East Africa is filled with forests, snowy peaks, swamps, savannahs and the largest population of big mammals, forcing the creatures to takes risks to survive.

The United States-sized desert is explored, revealing large sandstorms, drought-ridden regions, ants that can withstand the mid-day sun, sand dunes, and more.

Two diverse and mysterious landscapes at the southern tip, which are home to a variety of animals and created by two great ocean currents, are examined.

Clever meerkats encounter an even smarter bird; black rhinos meet for a surprisingly social gathering; aggressive giraffes fight over the limited resources.

Chronicling the dramatic real-life sagas of four African animal families: leopards, hyenas, wild dogs, and lions, as they strive for a foothold.

A doctor, who is seeking a cure for Alzheimer's disease, conducts unusual experiments with shark brains, building them up to five times their normal size.

Humanity desperately makes plans to prevent possible extinction as a newly discovered comet journeys along a collision path leading straight toward Earth.

An FBI trainee enlists the aid of an imprisoned, psychopathic genius as she tries to track down a serial killer, but he may prove to be just as dangerous.

Two defense lawyers who lack courtroom experience try to break the code of silence that surrounds two soldiers accused of murdering one of their own.

An FBI trainee enlists the aid of an imprisoned, psychopathic genius as she tries to track down a serial killer, but he may prove to be just as dangerous.

Two defense lawyers who lack courtroom experience try to break the code of silence that surrounds two soldiers accused of murdering one of their own.

A forensic look at how lions hunt large prey like buffalo and zebra, offering new perspectives on the way these predators stalk, chase and kill.

An in-depth examination is taken into the many different habitats on Earth, featuring an exploration of the Amazon and its rainforest.