TV Guide National Geographic Channel Sunday

Toronto Airport Uncovered - $Frozen Frontline

Toronto Airport Uncovered - $Seconds From Disaster

HSI executes a controlled delivery of ketamine in Queens; Customs & Border Protection recovers stolen artifacts in Miami and finds a shipment of meth at LAX.

The United States Customs and Border Protection confronts human smuggling and Homeland Security Investigations finds fentanyl in a car.

The U.S. Department of Homeland Security Investigations finds a shipment of cocaine-filled tire rims in Puerto Rico.

Homeland Security Investigations seizes counterfeit cash and vaccination cards; Customs and Border Protection pulls 205 kilos of methamphetamine out of one car.

From airborne adventures to ground-covering treks, offering a closer look at the instincts and behaviors that drive these awe-inspiring migrations.

From glacial peaks to coastal rainforests, Olympic National Park, on Washington's Olympic Peninsula in the Pacific Northwest, has rich biodiversity.

From its volcanic origins, the lush expanse of Katmai National Park and Preserve National park in southern Alaska boasts more than just bears.

Yellowstone National Park is an American trailblazer, as it spreads nearly 3,500-square-miles from Wyoming and into parts of Montana and Idaho too.

The Everglades National Park National park in Florida is an ecological treasure of North America, which brims with life.

Big families and strong relations are the secrets to success for savanna elephants; emotional bonds and wisdom help them navigate a changing world.

The 150 elephants remaining in the Namib Desert must be as tough as the landscape to survive.

Revealing the secrets of the world's most elusive elephant species and how they have adapted to life in their rainforest home.

The octopus has the superpower to change their color hundreds of times an hour or transform the shape of their bodies to mimic their deadly predators.

Octopuses are masterminds capable of solving complex problems, strategizing & planning; the extraordinary superpower of their minds is the secret to success.

Octopuses have secret social lives, from moms-to-be to octopuses capable of coworking with other species, they are even more sociable than ever imagined.

Scientists race to save the last two northern white rhinos from extinction.

Anthony Mackie is on a mission uncovering the tensions between sharks and coastal communities in Louisiana to solve how one can safely share the ocean's bounty.

Chris Hemsworth and his father go on a road trip back in time as they explore the scientific impacts behind social connection and reminiscence therapy.

Scientists race to save the last two northern white rhinos from extinction.

After an increase in shark attacks along Australia, Chris Hemsworth seeks to understand different species of sharks and their behaviors.

Chris Hemsworth and his father go on a road trip back in time as they explore the scientific impacts behind social connection and reminiscence therapy.

The Everglades National Park National park in Florida is an ecological treasure of North America, which brims with life.

Yellowstone National Park is an American trailblazer, as it spreads nearly 3,500-square-miles from Wyoming and into parts of Montana and Idaho too.

From its volcanic origins, the lush expanse of Katmai National Park and Preserve National park in southern Alaska boasts more than just bears.

From glacial peaks to coastal rainforests, Olympic National Park, on Washington's Olympic Peninsula in the Pacific Northwest, has rich biodiversity.

A hostile desert conceals wild life that is able to survive in the extreme conditions of both high heat and no moisture, and experts look at new discoveries.

From airborne adventures to ground-covering treks, offering a closer look at the instincts and behaviors that drive these awe-inspiring migrations.