Extreme Alaska, Behind the Science Knowledge Challenge & more

"Extreme Alaska" SUNDAY at 9P et/pt Explore the extremes of America's most rugged state, and how the primitive acres of Denali National Park both captivate and challenge its inhabitants. VIDEOS >> PHOTOS >> "BEHIND THE SCIENCE" MONDAY — WEDNESDAY STARTING AT 9P et/pt Discover the extraordinary complexities of the human body and go behind the science of conjoined twins, obesity and whether nature endows some children with a "genius gene." VIDEOS >> PHOTOS >> Take our daily Behind the Science knowledge challenge for a chance to win fitness prizes that will help your body keep up with your mind! TAKE THE CHALLENGE NOW >> MONDAY SEPTEMBER 17 "National Geographic's Most Daring Moments" at 8P et/pt From death-defying rescues on land, air and sea, to predators unexpectedly becoming prey, meet the risk takers who lived to tell their tales. ***WORLD PREMIERE*** "Science of Conjoined Twins" at 9P et/pt Explore the separate and shared physiology of conjoined twins who maintain striking individuality despite spending every moment of their lives attached. WATCH A PREVIEW >> "Science of Dwarfism" at 10P et/pt Meet a family of dwarfs and one of the smallest people in the world. Find out how "little people" adjust to the average-sized world around them. TUESDAY SEPTEMBER 18 "National Geographic's Most Astonishing Moments" at 8P et/pt Meet a Great White Shark face to face and a man who uses himself as polar bear bait. Play chicken with a ravaging twister. Only on NGC. ***WORLD PREMIERE*** "Science of Obesity" at 9P et/pt What happens inside the bodies of the exceptionally obese? Can it be reversed? NGC explores the genetics of weight gain and medical advances to treat it. WATCH A PREVIEW >> ***PREMIERE*** "Brain Child" at 10P et/pt Are some children born with a "genius gene?" Can intelligence be nurtured? What happens if a child misses crucial brain stimulation early on? NGC investigates. WATCH A PREVIEW >> WEDNESDAY SEPTEMBER 19 ***WORLD PREMIERE*** Explorer: "Science of Babies" at 8P et/pt Did you know babies can learn languages and even grasp math? Explore the remarkable plasticity of a baby's brain and see how early experiences influence human development. WATCH A PREVIEW >> "In the Womb" at 9P et/pt Pioneering medical imaging technology reveals a human baby's transformation from a single cell to a complex, self-sustaining organism in real time inside the womb. THURSDAY SEPTEMBER 20 Naked Science: "The Deep" at 8P et/pt Join NGC on a journey from the ocean's surface to its farthest depth to discover what lies at the bottom of the sea. "Inside the Living Body" at 9P et/pt Microscopic filmmaking, advanced medical technologies and state-of-the-art CGI take you inside a living, functioning human to reveal how our bodies evolve from birth to old age. PHOTOS, PREVIEWS AND MORE >> FRIDAY SEPTEMBER 21 ***WORLD PREMIERE*** Dog Whisperer: "Kiko, Tootsie & Ginger, and Binkey" at 8P et/pt A min pin gets solitary confinement when visitors come; a screenwriter's Frenchies are a horror show; and a two-legged Chihuahua needs help getting around. WATCH A PREVIEW >> GET THE NEW MOBILE RINGTONE "CESAR'S WAY" >> Dog Whisperer: "Buddy, Tiger & Roxy, and Booker" at 9P et/pt Cesar tames two rowdy Rottweiler pups, then takes on Buddy the Biter and Booker, a country-bred Vizsla, who needs help adapting to city life. Explorer: "Science of Babies" at 10P et/pt Did you know babies can learn languages and even grasp math? Explore the remarkable plasticity of a baby's brain and see how early experiences influence human development. WATCH A PREVIEW >> SATURDAY SEPTEMBER 22 The Animal Extractors: "Polar Bears in Peril" at 8P et/pt Agents catch a polar bear on the edge of town, and a mother and her cubs are airlifted to safety. Next, trouble-making beavers, peacocks, and armadillos. "Revenge of the Elephants?" at 9P et/pt Join an intriguing investigation into the elephant psyche to see what is turning these highly emotional, social and intelligent creatures into killers. Is it payback? WATCH A PREVIEW >> "Whale Attack" at 10P et/pt Rare footage of killer whales attacking a gray whale and her calf changed our understanding of the secrets that lie beneath the waves. SUNDAY SEPTEMBER 23 "Hooked: Monster Fish!" at 8P et/pt A catfish the size of a bear? A 1,000-pound marlin? Discover monster fish so prized that fanatic fishermen use their own arms for bait. ***WORLD PREMIERE*** "Extreme Alaska: Building the Wild" at 9P et/pt From the volcanic and continental rock that formed its harsh terrain to its stunning glacier-carved landscape, NGC takes you on a tour of America's most rugged state. WATCH A PREVIEW >> PHOTOS >> ***WORLD PREMIERE*** "Extreme Alaska: Denali National Park" at 9P et/pt Grizzlies, wolves and moose roam this terrain just 200 miles from the Artic Circle, but it is the altitude here that defines which wild conditions — and creatures — dominate. WATCH A PREVIEW >> PHOTOS >> Explore More Watch video clips of your favorite shows. Go >> Visit the National Geographic Channel home page. Go >> Subscribe to National Geographic magazine. Go >> Privacy policy. See Details. Go >> © 2007 The National Geographic Channel. 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