Michael Rosenfeld

Discover the evolutionary secrets of some of the world’s most majestic creatures. From voracious crocodiles and acrobatic birds to stupendous whales and majestic elephants, WHEN WHALES WALKED follows top scientists on a global adventure as they follow clues from the fossil record and change what we thought we knew about the evolution of iconic beasts.

What is it really like to go to war? Filled with terror, pain, and grief, it also brings exhilaration, and a profound sense of purpose. Renowned authors Karl Marlantes and Sebastian Junger help us make sense of this paradox and get to the heart of what it’s like to be a soldier at war. Veterans of various conflicts reveal some universal truths of combat with unflinching candor.

It's death on an unimaginable scale, when a majority of Earth's species quickly die out. It's called "mass extinction," and it's happened at least five times before. Cataclysms, such as supervolcanoes or asteroids, are thought to cause these events, but some experts believe a manmade mass extinction could be next. Is our planet in trouble? And if so, is there anything we can do to stop the next catastrophic annihilation? Experts are traveling the world, performing groundbreaking scientific detective work to answer these very questions.

Diseases that were largely eradicated in the United States a generation ago—whooping cough, measles, mumps—are returning, in part because nervous parents are skipping their children's shots. NOVA's "Vaccines—Calling the Shots" takes viewers around the world to track epidemics, explore the science behind vaccinations, hear from parents wrestling with vaccine-related questions, and shed light on the risks of opting out.

나누의 대모험!! 난 얼음이 너무 좋아요, 그리고 사냥은 힘들어요! 호기심 많은 북극곰 ‘나누’에게 얼음으로 둘러싸인 세상은 너무 재미있다. 하지만 마냥 즐거운 ‘나누’와는 달리 엄마 곰은 따뜻해질수록 걱정이 늘어간다. 얼음이 녹으면서 생활의 터전과 함께 먹이감이 줄어들기 때문이다. 결국 배가 고파 남동생은 죽어가는데… 이제 ‘나누’도 사냥하는 법과 함께 사는 방법을 배워야 한다. 실라의 대모험!! 난 바다가 너무 좋아요~너무 시원하거든요! 엄마와 이모와 함께 살고 있는 바다코끼리 ‘실라’는 바닷속에 있을 때가 가장 좋다. 엄마와 함께 있을 수 있고, 위험하지 않기 때문이다. 하지만 바다코끼리 역시 점점 따뜻해지는 북극 날씨 때문에 굶주린 적으로부터 자신들을 보호해야 한다. 어느 날 위험한 적으로부터 쫓기게 되고 엄마와 이모는 목숨을 걸고 실라는 지키는데.. 이제 실라도 얼음왕국에서 혼자 사는 법을 배워야 한다. 그리고, 나누와 실라 그 둘이 만났을 때, 자연의 위대함이 만들어낸 감동을 전해준다!!

A documentary about the influences on Tolkien, covering in brief his childhood and how he detested the onslaught of industry through the idyllic countryside, moving on to describe his fighting experience from WWI, and closing with a look at the Finnish inspiration for the scholar's self-invented languages of Elfish. In between are interviews with the cast of the films and some clips, by far the most from "The Fellowship of the Ring", but a few glimpses of Rohan riders (from "The Two Towers") are provided. Also, there are interviews with a range of the filmmakers.

Documentary narrated by Tom Brokaw. National Geographic delves into the untold storylines and unresolved mysteries surrounding the Japanese attack on Pearl Harbor on Dec. 7, 1941. Oceanographer Robert Ballard dives deep into the waters of the harbor to find the remains of a Japanese sub and closely examine the famous wreckage of the USS Arizona. This footage is mixed with interviews with survivors of the attack.

National Geographic Wildlife Filmmakers Go Eye-to-Eye with Danger! They swim with sharks, confront venomous snakes, and stalk hungry lions. They're National Geographic filmmakers, and for these remarkable adventurers, capturing unforgettable footage in the wild is not just a job, it's a way of life. Join a cinematographer in the rain forest canopy as he goes to incredible lengths - and heights - to film the world's most powerful bird of prey. Witness the frustration of a filmmaker who just misses the scene-stealing shot of jackal pups greeting their mother in the Serengeti, and feel the exhilaration when he finally captures the event to perfection. Meet the talented professionals who go behind the camera every day and sometimes risk their lives to bring us extraordinary images of nature's most amazing creatures.

Why did Germany torpedo the Lusitania, a civilian vessel? And why did such an enormous ship sink so fast? Now, take a high-tech plunge beneath the Irish Channel and relive on of the century's most mysterious maritime tragedies: The date is May 7, 1915, just nine months into World War I. A German U-boat torpedoes the Lusitania — one of than largest and fastest luxury liners in the world. Of the 1,959 people aboard, including millionaire Alfred Vanderbilt, nearly two-thirds will die. Many are trapped inside as the great ship sinks in just eighteen minutes.