Watch Full Seasons on 
Shows

Photos: Deadliest Catch Season 16

West Coast Wildfires Threaten Belushi’s Farm

Apocalypse '45 Virtual Screenings Extended

Bad Chad Customs: One of a Kind Creations

Freeze Frame Hall of Fails from Dodgeball Thunderdome

In Memory of Jesse Goins from Gold Rush: Dave Turin's Lost Mine

Behind the Balls: Meet the Brave Contestants of Dodgeball Thunderdome

Jim Belushi Opens Up About His New Career High in the Cannabis Industry

Naked and Afraid of Sharks 2: Survivalists in Action

Naked and Afraid of Sharks 2: Meet The Survivalists
See All Shows
DNews

How to Help Save the World’s Endangered Rhinos

5 Ways YOU Can Save the Rhinos

Condors are Missing in California’s Wildfire Blaze

Could our Outdoors be Saved by the Unlikeliest Source?

Catching a Glimpse of Comet NEOWISE, a Once in a Lifetime Moment

New Study Reveals True Size of Megalodon

Small But Mighty: The Hummingbird

The Dog Days of Summer

Surprise! New Panda Cub Born at the National Zoo

A Woolly Rhino was the Last Meal of a Prehistoric Puppy
See All DNews
Nature

How to Help Save the World’s Endangered Rhinos

5 Ways YOU Can Save the Rhinos

Condors are Missing in California’s Wildfire Blaze

Could our Outdoors be Saved by the Unlikeliest Source?

A Fleeting Moment: Comet NEOWISE

Catching a Glimpse of Comet NEOWISE, a Once in a Lifetime Moment

New Study Reveals True Size of Megalodon

Small But Mighty: The Hummingbird

Sunday Scaries

The Dog Days of Summer
See All Nature
Exploration

Zen and the Art of Shark Diving

The World's 7 Scariest Drives

7 Places for the World's Best Stargazing

Tour Paris by Photograph

5 Wonders You Probably Didn't Know Were Man-Made

Aztec Secrets Unearthed in New Science Channel Special

Female Ocean Rower Attempts Record-Breaking Solo Crossing

Why the People of Myanmar are Fighting Conservation Groups

Dr. Kathy Sullivan is an Explorer of Firsts

Exploring Isolation: Inside the Minds of Legendary Explorers
See All Exploration
Space

Is There Life on Venus? Something Smells Fishy…

Neptune: The (Official) Last Planet

This Is How Our Sun Will Die

A Fleeting Moment: Comet NEOWISE

Catching a Glimpse of Comet NEOWISE, a Once in a Lifetime Moment

An Astrophysicist's Perspective: the World Could Use a Dose of Overview

September: What’s New in Space Exploration This Month?

NASA Astronaut Jeanette Epps Will Make History with Her Next Mission

An Asteroid is Going to Kill Us All Before the Election... Or Not

Fly Me to the Moon and Mars: SpaceX’s Starship and Spaceports
See All Space
Science

Solar-Powered Desalination: Cleaner Water Through Sunlight

The Bacteria Library: One Hundred Years of Infectious Bugs

Disease Hotspots: Climate Change and its Impact on Epidemics

Raindrop Electricity: Generating 'Blue Energy' from Rainfall

Tornado Science: Predicting The Whirlwind

2 Storms, 1 Coastline, Hurricane Season Continues

Wildfire Challenge: Growing Investment in Firefighting Technology

Meet the Founders of MISS

Hurricane Prediction: The Forecasting Science that Saves Lives

Spider Silk: Wonder Material Used to Heal the Human Body
See All Science
Motor

Hydrogen Power: Moving the World into Clean Energy

Tune-Up Your Engines, American Chopper Returns August 4th

Most Remarkable Cars from Motor Monday

Safety Updates for Classic Cars

Jesse James Returns to Discovery in an All New Season of Monster Garage

Mods for Beginners

Carroll Shelby: The Man Who Raced Against Ferrari with a Ford

Classic Chevys

Gifts for Car Lovers

Cool Convertibles We're Crushing On Right Now
See All Motor
Schedule
More
Cancel
Season 1, Episode 1

Ranger School

Featuring added facts and bonus scenes – Join Army Ranger candidates as the spend two months undergoing one of the most challenging tests in the world at Ft. Benning, Georgia.
See Tune-In Times

Previous Episode

Next Episode

Air Force Pararescue