GLOBAL TREKKER HD

Gordon Welchman was a British codebreaker who played a crucial role in undermining Nazi communications in WWII. Discover how Welchmans topsecret work has impacted modern surveillance and codebreaking.

There are few ceremonies in the world that are as lavish or as vibrant as Indian weddings. And for IndianAmericans, the unions are just as extravagant here in the States, with an average cost of half a million dollars. Witness the big Bollywood marriages of three couples as they attempt to balance millenniaold traditions and modern American sensibilities. Then see how they celebrate their love and

Examine the deaths linked to a worldfamous axe murderer. Find out what really happened to Lizzie Bordons victims through newly uncovered evidence, 3D graphics, and a reenactment with a ballistic corpse.

Explore the mysterious death of musician and Rolling Stones founder Brian Jones. Was it the rockandroll lifestyle or foul play? See how new videotapes and a virtual autopsy bring light to a story thats been painted black.

Features interviews with Madonnas first manager Camille Barbone, dancer Carlton Wilborn, Evita studio executive Lauren Lloyd, plus many more.

Features interviews with Tom Hanks Captain Phillips producer Dana Brunetti, A League Of Their Own producer Elliot Abbott, friend and actor George Maguire, plus many more.

Summer means food is plentiful and this years youngsters must feed, grow and prepare to start life alone. For puffins its a massive leap of faith as they jump from their clifftop nests into the ocean.

In the Atlantics far north, autumn is the season of gales, cooling temperatures and driving rain. This is when the wildlife must make the final preparations for winter or migrate to warmer climes.

Amy Rouse and her Border Collie Mist trains for the English National Sheepdog Trials. Quebecs MIRA foundation provides assistance dogs for children with autism. Buddy, a hero dog, guides an Alaskan State Trooper to his owners workshop.

Dogs and diabetes how does it work? Whizz provides therapeutic benefits to children with special needs. Pups in Prison are trained by inmates over a period of 16 months.

A Staffordshire Bull Terrier Diesel who is able to locate cheetah faecal droppings. Ozzie is one of only three dogs in the world who is trained to detect poisonous Cane Toads.

How are dogs trained to guide the blind and visually impaired? Border Collies at Johannesburg International Airport are used to chase birds and in Japan, new puppies are born and bred to become guide dogs in future.

With the arrival of spring, days grow longer and temperatures rise. However, spring in Alaska is short. Animals have just two months to find food and start a family, while avoiding predators.

Summer has arrived in Alaska.This sets the scene for one of the worlds greatest migrations of the Alaskan salmon run.

Rainforests cover just six percent of Earths surface yet contain almost half of the worlds plants and animals. With a diversity of mammals, birds, and bugs unrivaled almost anywhere in the world, Panamas Barro Colorado Island is the perfect microcosm of nature. Every year, passionate and dedicated scientists gather to this oasis of life, scaling the treetops, from canopy to forest floor, in an att

Casey Anderson, a Montana native wildlife expert works with wildlife filmmaker Ren Araneda to capture the wild pumas of Torres del Paine National Park in Chilean Patagonia. Together, they have filmed things seen nowhere else in the world that will unlock the mystery of the pumas true nature.

Baby Giraffe meets the herd, the Zoos five otter brothers are on the move and the ectotherm team search for a hidden for a treasure.

This time on Wild Heroes, its an anxious time for Zoo vets as they work to save one of the most endangered birds on the planet, and the ectotherm team are on a mission in the wild South Island.

This time on Wild Heroes, the Zoo welcomes two crocodiles to the Swamp Forest, the new South East Asia habitat opens and the team prepare for the birth of a baby southern white rhino.

Auckland Zoos primate team prepare to welcome a new birth.

Meet the creature that scientists believe is the key to the story of life and how it evolves the anole.

Explore a 400 square mile region of the Pantanal where jaguars rule and life follows the seasonal rhythm of the water.