On the trail of tiger sharks in the Pacific, Will explores the power of smell. For humans, the sense of smell triggers deep memories and emotions, but it has an even more vital function in the animal world.

Welcome to Earth Season 1 Episodes...

• s01e01 - The Silent Roar
• s01e02 - Descent into Darkness
• s01e03 - Mind of the Swarm
• s01e04 - Power of Scent
• s01e05 - Speed of Life
• s01e06 - Beyond Fear

Welcome to Earth Show Summary

Will Smith - whose curiosity and wonder is positively infectious - is guided by National Geographic Explorers traveling to different corners of the world to get up close and personal with the weirdest, most unusual, dangerous and thrilling spectacles of the planet.