Welcome to Earth

Will Smith travels to a remote Pacific island to explore the interior of an active volcano, seeking the source of inaudible sounds. He uncovers how every element of the planet produces its own distinct, often unheard, sound.

Will Smith joins marine scientist Diva Amon on a submersible journey to the ocean floor, exploring the use of color in marine life as they descend nearly 3,300 feet below the surface.

Decades after being captivated by a National Geographic photo of the Serengeti wildebeest migration, Will Smith returns to the region to witness the event firsthand and learns about the remarkable strategies these animals use to survive.

Will follows tiger sharks through the Pacific to investigate how they use their powerful sense of smell, which plays a crucial role in their survival and behavior, far beyond its emotional and memory-related functions in humans.

Will travels to the Namibia Desert, a place where the environment has remained largely unchanged for over 50 million years, offering a rare glimpse into Earth's ancient past. He learns that much of the activity around us goes unnoticed because it occurs at speeds or over timescales beyond human perception.

Will and polar explorer Dwayne Fields embark on a final challenge, being dropped by helicopter into the heart of an Icelandic glacier.