How do people and animals survive in the most extreme climates on Earth? Nat Geo Animals investigates in this MEGA episode, featuring three full episodes. Climb to the Mount Everest "death zone," brave the harsh cold weather of Antarctica with explorer Bertie Gregory, and experience the dry, searing temperature of one of the hottest places on Earth: America's Death Valley. Expedition Everest - 00:00 In a groundbreaking expedition on Mount Everest, dozens of scientists converge to investigate what secrets the world’s highest peak has to tell us about our changing climate. The notorious Khumbu Glacier is mapped in stunning detail, biologists study extreme lifeforms, and a team of Sherpas and climate scientists climb straight towards the “death zone” to install the highest weather station in the world. Polar Worlds with Bertie Gregory Mashup - 44:02 National Geographic filmmaker Bertie Gregory travels to the gateways to the poles to film wildlife in two of the harshest environments on the planet: South Georgia Island above Antarctica, and Canada’s frigid North below the Arctic Circle. Surviving in these vastly different environments require cunning, persistence and the ability to adapt to a changing climate. This is the story of Bertie’s quest to capture these wild environments firsthand. America the Beautiful: Classic - Death Valley - 1:28:04 It’s a juxtaposition of American proportions: a lush, airy mountain looms over our most barren desert. Between Death Valley’s searing temperatures and the alpine air of Mount Whitney lies a 146-mile stretch that only the hardiest can survive. From nearly three hundred feet below sea level to towering over fourteen thousand feet above, this is a wild Tale of Two Extremes. Explore the World with National Geographic subscriptions: https://natgeo.com/ytngmagazine ➡ Subscribe: https://on.natgeo.com/41A7tf0 ➡ Get wild with more Nat Geo Animals Full Episodes: https://on.natgeo.com/3V2EOLO ➡ Get Nat Geo Full Episodes: https://on.natgeo.com/3V5ZfHI And check out more National Geographic series and specials here: ➡ Disney Plus: https://on.natgeo.com/3q6on5p ➡ Hulu: https://on.natgeo.com/3Qor0Ko ➡ NGTV: https://natgeo.com/tv ➡ ABC: https://abc.com #NatGeoAnimals #BertieGregory #MegaEpisode About National Geographic Animals: National Geographic Animals brings you closer to the wild than ever before. Take a journey through the animal kingdom to discover fierce predators, surprising behaviors, adorable babies, and more through our fascinating wildlife documentaries, series, and specials. Get More National Geographic: Official Site: https://nationalgeographic.com Instagram: https://instagram.com/natgeo Facebook: https://facebook.com/natgeo Threads: https://threads.com/@natgeo X: https://x.com/NatGeo LinkedIn: https://linkedin.com/company/national-geographic TikTok: https://tiktok.com/@natgeo Reddit: https://reddit.com/user/nationalgeographic Pinterest: https://pinterest.com/natgeo Exploring Earth's Most Extreme Climates | MEGA Episode | Nat Geo Animals https://youtu.be/GBFNqpvxBhQ National Geographic youtube.com/@NatGeoAnimals