Watch Full Seasons on 
Shows

Witness the Frontlines of California's Wildfires with New Series 'Cal Fire'

First Look at the New Season of Street Outlaws: Fastest in America

First Look at the New Season of Street Outlaws: Fastest in America

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
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

The First Looks of Fall

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
See All Nature
Exploration

Meet the First 6 Awardees of The Explorers Club Discovery Expedition Grant Program

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
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 0, Episode 18

How Evil Are You?

Horror filmmaker Eli Roth searches for the true nature of evil, covering the past and present and surveying both philosophers and maniacs. In a series of experiments, he examines what causes people to perform evil acts.
See Tune-In Times

Previous Episode

Curiosity: Alien Invasion: Are We Ready

Next Episode

X-Ray Yellowstone