Watch Full Seasons on 
Shows

Murder Nova Announces First Race In Street Outlaws’ No Prep Kings Series

Father-Son Duo Go their Separate Ways In New Season of Gold Rush: White Water

How Ten Years has Changed the Gold Rush Mine Bosses

Gold Rush Miners Then and Now

No Prep Kings Season Opener Grants Ryan Martin A Third Shot At Victory

Reaper Forms Team of Top 'Outcast' Racers to Gain No Prep Kings Advantage

NOLA Street Outlaws Team Up To Take No Prep Kings Crown

Team Texas Seeks A Third No Prep Kings Championship Win

OKC Racers Form Alliance To Stake Claim On No Prep Kings Trophy

River of No Return Photo Gallery
See All Shows
Nature

How the World’s Largest Delta Might Slowly Go Under Water

How Endangered Monkeys Swing Over Traffic Jams in India

What Fat Bears and Astronauts Have in Common

Bigger, Badder, Fatter: Fat Bear Week 2019 is Here

Five Undercover Hibernators

Big Sur Condors, A Conservation Comeback Story

Romeo the Frog is Fighting for the Last-known Loa Water Frogs

Living with People and Elephants in the Serengeti

Twin Red Panda Cubs Born at Chester Zoo

10 Critically Endangered Wildlife Animals
See All Nature
Exploration

This Ancient Underground City Was Big Enough to House 20,000 People

UNEXPLAINED AND UNEXPLORED: Investigating the Legend of California's Gold Laden Ghost Ship

An Epic Road Trip in Scotland’s Remote Highlands

Awesome Fjords in Norway

Explore Colombia Where Few Have Trekked Before and Discover New Bird Species

Tanzania: Beyond the Wildlife

Explore the Magic and Beauty of Guatemala's Lake Atitlán

Faroe Islands

Camping Trip Safety Tips and Tricks

Rediscover Nature Along the Golden Isles
See All Exploration
Science

The First All-Female Spacewalk in NASA’s 61-Year History is Happening

62 Years Ago Marked the Start of the Space Age

The Ocean Cleanup Successfully Catches Plastic in Great Pacific Garbage Patch

This Black Hole Ripped a Star to Shreds — Here’s How

Venus the Temperate, Earth’s "Twisted Sister"

Welcome to K2-18b, Our Neighboring Celestial Oasis

The Chicxulub Crater, A Killer Asteroid, and an Extinction-Level Event

India's Lunar Leap: The Chandrayaan-2 Mission to the Moon

Tracking Hurricane Dorian: Here's Everything You Need to Know

8 Most Disastrous Hurricanes on Record
See All Science
Tech

Cobots: Robots with a Human Twist

Artificial Intelligence in Medicine: the Rise of the Digital Doctors

Hyperloop: How Elon Musk’s Tube Travel Concept Works

Satellite Saviors: How Earth-orbiting Sensors Can Help Save the Planet

Then & Now – Celebrating the Life of Kodak, the First Film Camera

Celebrating the Life of Kodak

Frenchman Flies across English Channel via Hoverboard

Wearable Technology

Learn More About the Soft Robots that are Changing the Field of Robotics

How Technology is Transforming Wildlife Protection
See All Technology
Motor

In Memory of Jessi Combs

Jessi Combs, Fastest Woman on Four Wheels, Dies in Land-Speed Record Crash

2019 World Rally Championship | Rally Deutschland

Ott Tänak Continues World Rally Domination In Germany

Ferdinand Piëch, former Volkswagen Chief and Grandson of Ferdinand Porsche, Dies at 82

The Tiny Weird World of Microcars

The Pebble Beach Concours d'Elegance Classic Car Show And Auction

Round-Up: 2019 Pebble Beach Concours d'Elegance

An Impressive NASCAR Cup Win for Kevin Harvick at Michigan

2019 NASCAR Truck Series | Corrigan Oil 200
See All Motor
Schedule
More
Cancel
Season 9, Episode 4

Troubled Waters

When hurricane Sandy hits, the PJD crew rushes off to rescue the 9/11 Memorial bike. Progress on the production bike stalls out when Sr. and Jr. disagree on a plan of action. Sr. and Vinnie finally face off about their past differences after five years.
See Tune-In Times

Previous Episode

Old Wounds

Next Episode

Impasse