Curiosity is the engine of Welcome to Earth, a National Geographic documentary series that sends Will Smith chasing the planet's strangest natural spectacles.
What is Welcome to Earth about?
Across a run of forty-minute episodes, Welcome to Earth pairs Will Smith with veteran field scientists and explorers, including ocean researcher Diva Amon and mountaineer Cory Richards, as guides into places most viewers will never reach on their own. Each installment sets off toward a different extreme of the natural world, from volcanic vents to the deep ocean floor, treating Smith less as a narrator and more as a first-time witness working through genuine astonishment alongside the crew. The structure favors sensation over lecture: rather than a dry rundown of facts, the series builds each episode around a physical experience Smith undergoes on camera, then lets the accompanying explorer supply the science once the moment has landed. Adventure and documentary sit side by side in nearly equal measure, and the show leans into that combination rather than picking one register and staying there.
About the cast
Will Smith anchors the series as its on-camera guide, his reactions doing much of the work of translating scientific spectacle into something a general audience can feel rather than just absorb. He is joined episode by episode by specialists drawn from the National Geographic Explorer roster, among them ocean scientist Diva Amon and mountaineer and photographer Cory Richards, whose fieldwork gives each segment its factual backbone.
Context & significance
Welcome to Earth arrived in 2021 as part of a wave of premium nature programming built around a recognizable host rather than an unseen narrator, a format choice that changes the tone considerably from older wildlife documentary traditions. Director Cha Yeong-hun keeps the visual language cinematic throughout, favoring wide, patient shots of extreme landscapes over rapid-cut editing, which suits a show more interested in scale and awe than in plot. The British-American co-production draws on National Geographic's global network of scientists and camera teams, which is what allows the series to jump between such different environments across its run without losing a consistent visual identity.
Watching Welcome to Earth on Ktime
Welcome to Earth streams on K-Time with Persian dubbing and Persian subtitles, so viewers can follow Will Smith's journey either in the original English or in a fully localized Farsi version. Reading this page requires nothing at all, and watching the series itself just needs a K-Time account login, with the interface available in Farsi for viewers who prefer a Persian-language experience throughout.