Stories of those who believed in dreams and defied the commonplace with their extraordinary creations; covering some of the world's architectural and engineering structures, scientific inventions, and social wonders.

Modern Marvels

Exploring the inner workings of outer space.

How the Universe Works

The questions in myths and urban legends are put to the test; seeking to find out which myths are true and which are not.

MythBusters

Some of the biggest engineering projects that lie in ruins; cities that are empty ghost towns, bridges that were never finished and roads to nowhere; these deserted places are home to many mysteries and untold secrets.

Mysteries of the Abandoned

How It's Made

A look various baby animals and their first few months of life.

Too Cute!

A first-ever, in-depth and behind-the-scenes look at the diverse animals residing at the Bronx Zoo, including the knowledge and diverse skills that are needed to run the world-famous facility.

The Zoo

Modern imaging technology and analysis from military and intelligence professionals, as well as leading scientists, investigate mysteries from strange geological occurrences to weird man-made structures as seen by more than 4,000 orbiting satellites.

What on Earth?

Ordinary objects that are products of the most scientific engineering processes.

How Do They Do It?

Dr. Jeff and his team of 30 veterinary experts run one of the busiest animal clinics in the U.S.

Dr. Jeff: Rocky Mountain Vet

CGI animation and other state-of-the-art technology helps answer questions and crack unsolved mysteries surrounding some of the greatest wonders of the ancient and modern world.

Unearthed

Recounting the hauntingly true stories of people who found themselves in a life-or-death situation, face to face with a dangerous animal.

I Was Prey

Fuzzy faces, sloppy kisses and puppy penalties are all part of the 15th annual experience that includes 93 adoptable puppies this year.

Puppy Bowl XV

Engineers and scientists build, test and launch the James Webb Space Telescope, the most powerful observatory ever constructed, and the astonishing cosmological mysteries it will investigate.

Beyond Hubble: The Telescope of Tomorrow

Researchers suggest the possibility of a fatal flaw in the construction design of the ocean liner.

Titanic's Achilles Heel

The expansion of federally protected grizzly bears in the Greater Yellowstone Ecosystem, spanning Idaho, Montana and Wyoming.

On Grizzly Ground

A look at sharks living deep in the ocean, where extreme adaptation is critical to survival.

What the Shark?

State of the art robotics and artificial intelligence.

The Age of Robots

South Africa's great whites are disappearing; shark scientist Alison Towner's mission to find these missing predators and solve the mystery behind their disappearance leads her and her all-female crew to uncharted waters and exciting discoveries.

Shark Women: Ghosted by Great Whites

Animal emergencies are followed in real time as they occur at animal hospitals and mobile vet emergency units across the country.

Animal ER Live

A look at some of the most lethal animals on the planet.

Nature's Deadliest

A look at the lives of some of the iconic predators that call Africa home, including lions, cheetahs, leopards and wild dogs.

Predator Land

Dr. Dan Thomson gives lectures about issues in veterinary medicine and animal agriculture.

DocTalk

How sex has impacted the way people govern, learn and do just about everything.

How Sex Changed the World

Academy Award-winning actress Lupita Nyong'o narrates stories of survival in one of the most pristine and unspoiled corners of the African plains.

Serengeti

The relationship Pennsylvanians enjoy with the surrounding wildlife.

Wild Pennsylvania

Astrophysicists at the forefront of the search consider the possibility of finding a planet like Earth among any of the bodies discovered by a new space-based telescope.

Planet Hunters

It is sometimes necessary to create large "super structures" to overcome nearly-impossible challenges. This series showcases the construction of some of these larger-than-life structures. Some of the buildings are constructed to be able to survive natural disasters, while the purpose of others is mainly to highlight what engineers are capable of creating. Among the structures featured on "Project Impossible" are the largest movable building in history and a skyscraper built to withstand major earthquakes.

Project Impossible

Six survivors of attacks recount their ordeals.

Day of the Shark 3

A visual journey through Yellowstone -- America's first national park -- blends imagery, including the park's wildlife, with classical music.

Yellowstone Symphony

Five extraordinary teams of trainer and dog face off against each other to see who will be named the top canine athlete when it comes to showmanship and talent and take home the gold.

Puppy Bowl Presents: The Winter Games

Scientists and metrologists around the world work to redefine the kilogram, the world's base unit to measure weight.

The Last Artifact

Skilled veterinarians take on extreme cases of animals -- from dogs to alligators -- who suffer from lumps, tumors and cysts and change their lives for the better.

Pop My Pet

Wildlife Aid, an animal rescue centre in Surrey, England, rescues, cares for and rehabilitates sick, injured and orphaned wildlife.

Wildlife SOS

A tiny volcanic peak west of Mexico is emerging as a major junction for thousands of sharks.

Shark Junction

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