Stream Now 
Shows
Meet the Puppy Bowl XIX Starting Line Up
Meet the Players of Puppy Bowl XIX
Digger and Mark walking through the woods to their hidden still sites.
Shiners Tested Like Never Before in Moonshiners Season 12
Villalobos Rescue Center Rushes to Save Dogs as Hurricane Ida Hits Louisiana
"I went with hope on this one. Social media and TV is so much negativity. I'd hope we could get back to that child that's all in us. That little boy that's in a grocery store that's in his Halloween Batman suit that doesn't have a car in the world."
The Most Astonishing Chainsaw Art from A Cut Above
Chainsaw Carvers Turn Wood into Art on Competition Series A Cut Above
Aya Blaine | 18 years carving experience | New York, USA
Meet the Chainsaw Carvers of A Cut Above
No more braces for Gabe!
The Browns Move Forward Despite Tragedy on Alaskan Bush People
Sig Hansen, June Hansen, Mandy Hansen holding baby, and Clark Pederson standing together.
Exploring Norway on Deadliest Catch: The Viking Returns
The Wolfpack Enters a New Era in Alaskan Bush People
See All Shows
DNews
Peak Inside the Scales with Reptile X-Rays
Meet The Champions of Fat Bear Week 2022
Channel Islands: A Tale of Two Worlds
Close up of Galapagos giant tortoise in San Cristobal, Galapagos Island.
Galápagos Giant Tortoises Are Mysteriously Turning Up Dead in Ecuador
3D low poly green plant HUD UI display. Future polygonal triangle point line ecology problems solution abstract biology genome engineering vector illustration future business technology.
Supertrees That Suck Up More Carbon Could Be Forest Climate Fix
A young coastal brown bear cub lays on a beach waiting for mom to catch fish in Alaska
Baby Bear Takes a Trip on Hallucinogenic ‘Mad Honey’
Hero Rats Are Being Trained to Rescue Earthquake Survivors
Further upstream the river becomes more trout friendly. This is an example of what a restored LA River might look like, with trees and pools for fish to hide in as they migrate up and downstream.
Can the Los Angeles River be Restored?
The LA River where it meets the Pacific Ocean in Long Beach, California. This is the entry point for migrating steelhead salmon that would hope to return to their spawning grounds in the mountains above Los Angeles. This marks the start of a nearly 40 mile journey upstream, though barriers above prevent a successful migration.
Helping the Los Angeles River Change Course
The Fascinating Plants of Mount Latimojong
See All DNews
Nature
This is the ultimate test to compare iPhone camera with my DSLR. It's amazing how well this came out, but still some limitations balancing the shadows of the bush on the rocks with the highlights on the mountain. I even tried to adjust this one a bit afterward, but the contrast range just wasn't there, even considering that I was shooting in RAW mode.
Year in Review: Nature in Focus Adventures
A captive Snowy Owl in winter quarters at the Raptor Center, Great Swamp National Wildlife Refuge, New Jersey. They, too, migrate. No matter where you are in North America, there are different opportunities to see different species.
Nature in Focus: Look Back at 2022
Snow geese are some of my favorite birds. They are beautiful to photograph, fun to watch, and their large congregations make for dramatic imagery.
Great Migrations
The Tipple Family Goes Behind the Scenes at Georgia Sea Turtle Center
Fall in Love with the Marine Animals of Georgia Aquarium
The Oldest Complete Fish Fossil was Discovered Thanks to Kung Fu
Peak Inside the Scales with Reptile X-Rays
While hiking in Sequoia National Park, California, on the mountain trail known as the Lakes Trail, I limited myself to only the most basic set-up, the camera on my iPhone Pro Max 13.
Giant Sequoia Trees Through a Tiny Lens
While hiking in Sequoia National Park, California, on the mountain trail known as the Lakes Trail, I limited myself to only the most basic set-up, the camera on my iPhone Pro Max 13. Glare was sometimes an issue, but I sort of like the effect.
Photographing Sequoia National Park with a Smartphone
Meet The Champions of Fat Bear Week 2022
See All Nature
Exploration
The Hunt for Outlaw Jesse James’ Treasure
Thoth, Ibis-headed god leads the deceased to the Underworld, Mummy-case of Pensenhor, c900BC. Coffin of Pensenhor, 22nd Dynasty, Thebes, Egypt. At British Museum. Artist Unknown. (Photo by CM Dixon/Heritage Images/Getty Images)
Meet the Ancient Egyptian Gods Who Empower DC Comic's Black Adam
Giza Egypt Pyramids in Sunset Scene, Wonders of the World.
What's Inside the Secret Chambers in the Pyramids of Giza
Spain, Murcia region, Caravaca de la Cruz, cityscape (Photo by: Hermes Images/AGF/Universal Images Group via Getty Images)
Women May Have Been Powerful Rulers of the Ancient World
Temple One shot from Temple 2 at Tikal Mayan Ruins in Guatemala.
A Canadian Teen Once Discovered an Ancient Temple – Using Google Maps
Photo taken in Colombia, Colombia
A Spanish Sunken Galleon Has a $17B Bounty Onboard - and Now You Can See It
Mt. Shasta, California’s Mysterious Volcano, is an Enigma Waiting to be Explored
Alejandro Arteaga holds an Atractus zgap.
Three New Species of Snakes Discovered in Graveyards and Churches in Ecuador
Atractus zgap was found in an orchard of small school in the Andean town El Chaco, Napo province, Ecuador.
See Three Newly Discovered Species of Cryptozoic Snakes
Paw prints on the coast. Foam wave. Sand beach. An imprint of the paws of a small dog.
Water Cremation Offers Eco-Alternative For Funerals
See All Exploration
Space
Iâ m dreaming about dinosaurus concept with cute little boy in an empty room
How to Save Humanity from Extinction
Asteroid rock on green starry background
Asteroid Ryugu Has Dust Grains Older Than the Sun. How?
moon, lunar, planet, landing, surface, earth, rock, night, astronomy, light, astrology, abstract, grey, crater, illustration, ornamental, apollo, system, solar, decorative, backdrop, texture, grungy, design, science, orbit, satellite, exploration, holes, background, grunge, space, peak, meteor, nature, detail, cosmos, landscape, universe
Scientists in China Discover Rare Moon Crystal that Could Power Earth
When We’ll Know if NASA’s Asteroid Impact Test was a Success
One Day Man Will Return To The Moon , & Will Set Up Bases & Colonies AS We Expanding Out Into The Solar System & The Depths Of Space.
What Comes After the Moon and Mars?
Blackhole concept
What Screaming Black Holes are Telling Us
The four members of the SpaceX Crew-5 mission pose for a portrait in their Crew Dragon flight suits at SpaceX headquarters in Hawthorne, California. From left are, Mission Specialist Anna Kikina from Roscosmos; Pilot Josh Cassada and Commander Nicole Aunapu Mann, both from NASA; and Mission Specialist Koichi Wakata from the Japan Aerospace Exploration Agency (JAXA).
The First Native American Woman Travels into Space with NASA's Crew-5 Mission
The sun rises on Rigel IV, a rocky planetoid in the Neutral Zone, on the Outer Rim of the Galaxy.
Want to Name a Planet? Now’s Your Chance
Highly detailed "Supermoon" Pink Moon image with a star field background
What We Learn from the Lunar Surface
Solar system planets set. The Sun and planets in a row on universe stars and lines of gravity background. Elements of this image furnished by NASA. /urls: https://www.nasa.gov/image-feature/suns-magnetic-field-portrayed https://solarsystem.nasa.gov/resources/545/artists-concept-our-solar-system/ https://www.nasa.gov/image-feature/goddard/2016/hubble-spins-a-web-into-a-giant-red-spider-nebula
Six Planets are Retrograde, What Does that Mean for You?
See All Space
Science
Iâ m dreaming about dinosaurus concept with cute little boy in an empty room
How to Save Humanity from Extinction
Lightning Strike On A House
Extreme Weather Tests the Durability of Solar and Wind Power
Close-up of architectural model in desk while female architects working on background
How 3D Print Building is Changing the Future
moon, lunar, planet, landing, surface, earth, rock, night, astronomy, light, astrology, abstract, grey, crater, illustration, ornamental, apollo, system, solar, decorative, backdrop, texture, grungy, design, science, orbit, satellite, exploration, holes, background, grunge, space, peak, meteor, nature, detail, cosmos, landscape, universe
Scientists in China Discover Rare Moon Crystal that Could Power Earth
The Berlin-Tegel airport "Otto Lilienthal" (IATA code: TXL, ICAO code: EDDT) is one of the two international airports in the german capital Berlin.
This Country is Transforming an Abandoned Airport into a Green Oasis
BEDFORDSHIRE, ENGLAND - SEPTEMBER 29: The as yet unnamed second Asian elephant calf to be born in the last 7 months stands at a photocall with its mother Azizah at Whipsnade Wild Animal Park on September 29, 2004 in Dunstable, Bedfordshire, England. Azizah is one of the three Asian elephants moved from London Zoo to Whipsnade in December 2001, and her new calf joins her sister Kaylee's, born earlier this year.
Saving Baby Elephants from a Deadly Herpes Virus
blue glowing futuristic city
Digital Twin Cities Can Shrink the Impact of Planet’s Largest Polluters
OLYMPUS DIGITAL CAMERA
Building Atlantropa: One Man’s Plan To Drain the Mediterranean Sea
Frontal close-up of an yellow-fever mosquito sucking blood, known vector of zika virus, chikungunya, yellow fever and dengue.
Why You Can’t Escape a Mosquito
Climate change idea. Soft focus on bunch of micro plastic that cannot be recycled.
Microplastics in Blood Spotlight Health Emergency from Plastic Pollution
See All Science
Motor
"Street sign, isolated"
California Proposes Ban on New Gas-Fueled Cars by 2035
Modern electric car chassis design battery modular platform skateboard module pack board with green recycling symbol sign. Recycle vehicle components battery cell pack, motor powertrain, controller.
How Lithium Batteries Will Improve EV Range and Rapid Charging
Flying on turbines taxicab illustrate the great speed of delivery the client in spite of the traffic jams
Air Taxis Bring Electric Flight Hype to Life in Busy Cities
Colorful silhouttes of different Electric Car or automobile types
Recycled Lithium-Ion Batteries are Outlasting Brand New Ones
A photograph of an American Classic car, as seen through the side window, showing the steering wheel, dash board and blue interior, Image taken in August 2018 on a sunny day at Goodwood Motor Circuit, in the UK, at a classic car meeting (breakfast club), open to the general public.
Retrofitting Older Cars with Electric Motors Could Transform Transport
Environmentally Friendly Alternative Energy Concept With Hydrogen Refuelling Station.
Hydrogen Ready to Ignite as Transport Network and Technology Takes Off
Aerial photo of a large oil tanker floating in calm seas.
Catch-22: How the Clean Energy Industry is Perpetuating Deep-Sea Mining
In March 2018 Siemens Mobility was commissioned by the Research and Development Center of the University Kiel to build a five-kilometer eHighway on the A1 autobahn between the Reinfeld and Lübeck interchanges
Are Electric Highways the Way of the Future?
Solid State Batteries Promise Long Life and Rapid Refuel Electric Vehicles
Electric vs. Hydrogen: The Pros and Cons of Greener Transportation
See All Motor
Schedule
More

5 Seasons
S1 E5

Mystery in Mammoth Cave

Phil and Jessica head to Mammoth Cave to learn about a strange phenomenon -- could something unspeakable be lurking in the old cave, or is it merely a trick of the brain?

← Previous Episode
Next Episode →

The Latest

Phil Torres and Silja Torres Welcome Baby Atlis Bjear Into The World!

How to Be a Top Notch Ghostbuster

Explore the Paranormal with Expedition X

Get Ready for an Epic Night of Adventure with Josh Gates

Extraordinary Moments from Expedition X

Josh Gates Returns With a Night Full of Adventure, Wednesdays on Discovery

The Best Tools for Conducting a Paranormal Investigation

Terror on Doll Island

Seasons

Episode   1

Mothman Phenomenon

Episode   2

Cambodia’s Jungle Monster

Episode   3

Terror on Doll Island

Episode   4

Mystery in Mammoth Cave

Episode   5

Mt. Adams’ UFO Encounters

Episode   6

The Amazon's Cursed Ruins

Episode   7

Lake of the Dead