Nature The Himalayas at 7 pm
The Himalayan mountain system is the planet’s highest and home to the world’s highest peaks. NATURE explores the diversity of wildlife and habitats of this mountain chain starring the mysterious snow leopard.

NOVA Oklahoma’s Killer Tornadoes at 8 pm
“Oklahoma’s Killer Tornadoes,” will update the previous NOVA episode “Deadliest Tornadoes” with new information about the May 20, 2013 tornado that swept through Moore, Oklahoma and surrounding areas, and will highlight the new radar system put in place to track tornadoes since the program originally premiered.

NOVA Deadliest Earthquakes at 9 pm
In 2010, epic earthquakes all over the planet delivered one of the worst annual death tolls ever recorded. The deadliest strike was in Haiti, where a quake just southwest of the capital, Port-au-Prince, killed more than 200,000, reducing homes, hospitals, schools, and the presidential palace to rubble. In exclusive coverage, a NOVA camera crew follows a team of US geologists as they first enter Haiti in the immediate aftermath of the tragedy. It is a race against time as they hunt for crucial evidence that will help them determine exactly what happened deep underground and what the risks are of a new killer quake. Barely a month after the Haiti quake, Chile was struck by a quake 100 times more powerful, unleashing a tsunami that put the entire Pacific coast on high alert. In a coastal town devastated by the rushing wave, NOVA follows a team of geologists as they battle aftershocks to measure the displacement caused by the earthquake. Could their work, and the work of geologists at earthquake hot-spots around the U.S., one day lead to a breakthrough in predicting quakes before they happen? NOVA investigates new leads in its investigation of a deadly scientific conundrum.

Nature The White Lions at 7 pm
This is the story of two remarkable and extremely rare white lion cubs on their journey to adulthood. Both are female, sisters born as white as snow in May 2009, in South Africa’s Kruger Park. Growing up on the savanna, they must not only overcome the same survival challenges that all young lion cubs must face, they must also overcome the threats their high visibility brings.

NOVA Hunt for the Supertwister at 8 pm
“Hunt for the Supertwister” includes a segment on the 1999 tornado in Moore, OK, the site of this week’s destruction.

Secrets of the Dead Airmen And The Headhunters at 9 pm
This program investigates a fantastic WWII tale of jungle ambushes, extreme engineering, blow darts defenses, and enemy headhunting. In 1945, an American B24 bomber is shot down over Japanese — controlled Borneo. The airmen bail out and survive, only to find themselves isolated and lost in the impenetrable jungle. Briefed to fear the “savage” Dayak inhabitants, the Americans are instead taken in by these tribes and become witness to a compassionate, resourceful people who shatter stereotypes, protect them from the Japanese, and eventually deliver them safely into the hands of an eccentric British Major who orchestrates their rescue by building a bamboo runway deep in the Borneo interior.

Nature Great Zebra Exodus at 7 pm
When thunderclouds begin to gather over Botswana’s Kalahari each year, 20 000 zebras begin an ancient journey, as southern Africa’s biggest animal migration gets underway. In a never-ending quest for grass and water, the striped herds make their epic trek across the vast otherworldly landscape of the Kalahari’s Makgadikgadi Pans, through prides of lions, and past families of meerkats, taking on the desert salt pans in their own way. The story of this spectacular annual migration is told through the eyes of zebra stallions, their mares, and their young, revealing the trials and triumphs and the fascinating social bonds that hold zebra families together.

NOVA Decoding Neanderthals at 8 pm
Over 60,000 years ago, the first modern humans—people physically identical to us today—left their African homeland and entered Europe, then a bleak and inhospitable continent in the grip of the Ice Age. But when they arrived, they were not alone: the stocky, powerfully built Neanderthals had already been living there for hundred of thousands of years. So what happened when the first modern humans encountered the Neanderthals? That question has tantalized generations of scholars and seized the popular imagination. Then, in 2010, a team led by geneticist Svante Paabo announced stunning news. Not only had they reconstructed much of the Neanderthal genome—an extraordinary technical feat that would have seemed impossible only a decade ago—but their analysis showed that “we” modern humans had interbred with Neanderthals, leaving a small but consistent signature of Neanderthal genes behind in everyone outside Africa today. In “Decoding Neanderthals,” NOVA explores the implications of this exciting discovery.

Secrets of the Dead Cavemen Cold Case at 9 pm
A tomb of 49,000 year-old Neanderthal bones discovered in El Sidron, a remote, mountainous region of northern Spain, leads to a compelling investigation to solve a double mystery: How did this group of Neanderthals die? And could the fate of this group help explain Neanderthal extinction? Scientists examine the bones and discover signs that tell a shocking story of how this group may have met their deaths. Some bones bear distinct signs of cannibalism. Was it a result of ritual or hunger? Neanderthal experts are adamant that they were not bloodthirsty brutes. What happened here 49,000 years ago will take viewers on a much bigger journey – from El Sidron to the other end of the Iberian Peninsula, where scientists are excavating beneath the seas off Gibraltar in search of Neanderthal sites.

Nature The Private Life Of Deer at 7 pm
From our kitchen windows we spot them, nibbling away at our gardens and shrubs. They wander along our highways, reminders of the wilderness we have paved our way through. From coast to coast some 30 matillion white-tailed deer make their home in the United States. But once they retreat from our view, where do they go? What secrets do they carry back into the forest, away from our prying eyes? Deer are among the most highly-studied mammals in the world; but does any typical homeowner with deer in the yard know how long a deer can live? When they sleep? How many babies a doe can have each year? Working with scientists, special camera equipment, and deer experts and devotees of every kind, NATURE reveals the hidden world of white-tailed deer in a whole new light.

NOVA Venom: Nature’s Killer at 8 pm
Venom scientists are in a race against time. Inside the bodies of many creatures, evolution has produced extreme toxic cocktails, all designed for one reason: to kill. It took millions of years to perfect these ultimate brews of proteins and peptides and we have only just begun to discover their potential. Now, the race is on to collect and study them before the animals that produce them disappear. But how does venom do its deadly work? NOVA reveals how venom causes the body to shut down, arteries to bleed uncontrollably and limbs to go black and die. But nature’s most destructive and extreme poisons could contain the building blocks for a new generation of advanced drugs that could treat heart attack, stroke, diabetes, obesity and cancer. Venom follows scientists on their expeditions to track down and capture the planet’s most deadly creatures, risking life and limb just to tease out milligrams of venom and get it back to the lab. Find out how nature’s deadliest cocktails could be medicine’s brightest new hope.

Secrets of the Dead Death On The Railroad at 9 pm
Death On The Railroad is a classic story involving foul play, cover ups, a murder mystery and a voyage of discovery to understand what happened to a group of Irish men who came to America for a better life but found only misery. In 1832, railroad contractor, Philip Duffy, hired 57 Irish immigrants to lay railroad tracks in West Chester, Pennsylvania. But, less than two months after their arrival, all 57 were dead. Did they all die – as was widely believed – due to a cholera pandemic? Or, were some of them murdered? In 2003, twin brothers discovered a secret file among their grandfather’s papers that led them to investigate the deaths of these men and find the location of their final resting place in a valley now known as Duffy’s Cut. Using the latest forensic and scientific investigative techniques, DNA, forensic analysis, facial reconstruction and historical detective work in Ireland and the USA, modern detectives and experts will unravel this extraordinary story.

Nature Legendary White Stallions at 7 pm
This story of the world-famous Lipizzaner stallions focuses on the bond that develops between the horses and their caregivers, beginning at the moment of their birth and culminating in the perfect harmony between horse and rider demonstrated at the famous Spanish Riding School in Vienna, Austria. Their carefully choreographed movements were originally developed for the training of war horses; only the strongest and most athletic horses qualified. The Lipizzaner stallion is bred for its courage, strength and character, but the horse is also gentle, sensitive, and exceptionally responsive to praise.

Nova Australia’s First 4 Billion Years: Strange Creatures at 8 pm
Of all the continents on Earth, none preserves a more spectacular story of its origins than Australia. NOVA’s mini-series takes viewers on a rollicking adventure from the birth of the Earth to the emergence of the world we know today. With help from high-energy host and scientist Richard Smith, we meet titanic dinosaurs and giant kangaroos, sea monsters and prehistoric crustaceans, disappearing mountains and deadly asteroids. This is the untold story of the Land Down Under, the one island continent that has got it all.

Secrets of the Dead Bugging Hitler’s Soldiers at 9 pm
Spied upon by MI19 in a bugging operation of unprecedented scale and cunning, 4,000 German POW’s revealed their inner thoughts about the Third Reich and let slip military secrets that helped the Allies win WWII. Based on groundbreaking research conducted by a team of leading German historians and scientists, the film will tell the story of how those confessions were stolen, how they changed the outcome of the war and how they can now reveal, in more shocking detail than ever before, the hearts and minds of the German fighter. The evidence that supports this extraordinary new chapter in the history of WWII will be told through powerful dramatic reconstructions.

Nature “Jungle Eagle“ at 7 pm
Harpy eagles are the most powerful birds of prey in the world. Standing three feet tall, with a six-foot wingspan and razor-sharp talons the size of bear claws, these birds are the heavyweight hunters of the South American rainforest. Enter the secret world of the harpy.

NOVA “Australia’s First 4 Billion Years: Monsters“ at 8 pm
Of all the continents on Earth, none preserves a more spectacular story of its origins than Australia. NOVA’s mini-series takes viewers on a rollicking adventure from the birth of the Earth to the emergence of the world we know today. With help from high-energy host and scientist Richard Smith, we meet titanic dinosaurs and giant kangaroos, sea monsters and prehistoric crustaceans, disappearing mountains and deadly asteroids.

Nature “Kangaroo Mob“ at 9 pm
Meet the mob of street smart kangaroos moving into Australia’s capital city and the ecologists following their every move. Over the course of one drought-stricken year we follow mob leader, Black Spot, and kangaroo mother, Madge, with her two young joeys — mischievous Sonny and tiny pouch-bound Alice. Here is a look at what happens when human development encroaches on wildlife habitat and two very different species are forced to co-exist.

Nature “The Mystery Of Eels“ at 7 pm
Though much of the natural world is discovered and understood, a few great mysteries remain. Consider the eel — snakelike and slimy, with a row of jagged teeth. Yet aside from these fearsome qualities, we know little about its life. Where it goes, what it does, and how it dies, nobody knows. Hailed by poets as the “siren of the North Sea” and “love’s arrow on Earth,” this shadowy creature has fascinated researchers for centuries. And now James Prosek, artist, writer, and eminent naturalist, takes on the mystery of the eel himself, shedding light on the animal and the strange behavior it inspires in those who seek to know it.

NOVA “Australia’s First 4 Billion Years: Life Explodes“ at 8 pm
Of all the continents on Earth, none preserves a more spectacular story of its origins than Australia. NOVA’s mini-series takes viewers on a rollicking adventure from the birth of the Earth to the emergence of the world we know today. With help from high-energy host and scientist Richard Smith, we meet titanic dinosaurs and giant kangaroos, sea monsters and prehistoric crustaceans, disappearing mountains and deadly asteroids. This is the untold story of the Land Down Under, the one island continent that has got it all. How did life storm the beaches and dominate planet Earth? Ancient Australian fossils offer clues. While the oceans were teeming, the world above the waves remained an almost lifeless wasteland – until the Silurian period, when the conquest of the land began. Host Richard Smith introduces Earth’s forgotten pioneers: the scuttling arthropod armies that invaded the shores and the waves of green revolutionaries whose battle for the light pushed plant life across the face of a barren continent. Join NOVA’s prehistoric adventure as four-legged animals walk onto dry land, with the planet poised for disaster.

Guts With Michael Mosley at 9 pm
This program uncovers the secret life of our digestive tract in an eye-opening and detailed exploration of the side of the body we normally never get to see. Using the latest in medical imagery and a tiny state of the art camera “pill” that he swallows at the start of the film, Michael Mosley takes viewers on a remarkable journey through his own internal system. At each stage he talks to medical experts and explains the amazing functions that happen without our conscious effort. This is one of the most fundamental parts of our bodies, controlled by its own nervous system and automatically providing our energy, water and nutrients; yet unless we get sick, we rarely think about what it’s doing.

Nature “Clash: Encounters Of Bears And Wolves” at 7 pm
What happens when two great predators come face to face in Yellowstone? The grizzly and the wolf — they couldn’t be more different. The bear is a loner, ranging far and wide in search of a rich variety of resources. The wolf hunts to survive and finds its strength in speed and teamwork. Their strategies have taken them to the very top of Yellowstone, and it’s no simple matter when they meet. In every encounter, the opposition must be measured, strengths must be tested, and risks must be carefully weighed. Each time, one of them will have a tactical advantage — but which one, and when? What emerges as each remarkable scene unfolds, is the keen awareness that runs through all of Yellowstone. Elk and eagle, coyote and raven, otter and owl, every creature must assess, decide, and act — to fight or to flee? It’s all in knowing your own strengths and limitations in the heat of the moment in Yellowstone.

NOVA “Australia’s First 4 Billion Years: Awakening“ at 8 pm
Of all the continents on Earth, none preserves a more spectacular story of its origins than Australia. NOVA’s mini-series takes viewers on a rollicking adventure from the birth of the Earth to the emergence of the world we know today. With help from high-energy host and scientist Richard Smith, we meet titanic dinosaurs and giant kangaroos, sea monsters and prehistoric crustaceans, disappearing mountains and deadly asteroids. This is the untold story of the Land Down Under, the one island continent that has got it all. Hidden in the red hills of Australia are clues to the mysteries of Earth’s birth, how life arose and how it transformed the planet into the world we now live in. Experts unveil the earliest forms of life: an odd assortment of bacterial slime. Life like this would flood the atmosphere with oxygen and spark the biological revolution that conquered the planet. Travel with NOVA and host Dr. Richard Smith to meet the cast in the first scenes of the great drama of life on earth.

Truth About Exercise With Michael Mosley at 9 pm
Whether you’re running, swimming, cycling or hula hooping, we have always been told that doing regular exercise will improve our bodies and is one of the keys to a healthy and happy life. Our one-size-fits-all approach to maintaining an active, healthy lifestyle is very rarely questioned, but with recent advances in genetic testing technology and brain stimulation techniques, scientists are uncovering the new and surprising truths about what exercise is really doing to our bodies, and why we all respond to it differently. In this program, Michael Mosley uses himself as a human guinea pig to discover the truth about exercise.

Nature “What Plants Talk About“ at 7 pm
This program integrates hard-core science with a light-hearted look at how plants behave, revealing a world where plants are as busy, responsive and complex as we are. From the  stunning heights of the Great Basin Desert to the lush coastal rainforests of west coast Canada, scientist J.C. Cahill takes us on a journey into the “secret world of plants,” revealing an astonishing landscape where plants eavesdrop on each other, talk to their allies, call in insect mercenaries and nurture their young. It is a world of pulsing activity, where plants communicate, co-operate and sometimes, wage all-out war.

NOVA “Ancient Computer“ at 8 pm
In 1900, a storm blew a boatload of sponge divers off course and forced them to take shelter by the tiny Mediterranean island of Antikythera. Diving the next day, they discovered a 2,000-year-old Greek shipwreck. Among the ship’s cargo they hauled up was an unimpressive green lump of corroded bronze. Rusted remnants of gear wheels could be seen on its surface, suggesting some kind of intricate mechanism. The first X-ray studies confirmed that idea, but how it worked and what it was for puzzled scientists for decades. Recently, hi-tech imaging has revealed the extraordinary truth: this unique clockwork machine was the world’s first computer.  NOVA follows the ingenious sleuthing that finally decoded the truth behind the amazing ancient Greek computer.

“Eat, Fast And Live Longer With Michael Mosley” at 9 pm
Michael Mosley has set himself a truly ambitious goal: he wants to live longer, stay younger and lose weight. But he wants to make as few changes to his life as possible along the way. And he thinks he’s found the answer — the ancient idea of fasting. Could the powerful new science behind this idea lead to a longer, healthier life? Mosley thinks he’s found a way of fasting that still allows him to enjoy his food. It sounds too good to be true. So he decides to take a road trip across the U.S. to investigate how a little hunger can make you younger — and of course — to try out some of this new science for himself.

NOVA ”Hunting the Elements“ at 8 pm
Where do nature’s building blocks, called the elements, come from? They’re the hidden ingredients of everything in our world, from the carbon in our bodies to the metals in our smartphones. To unlock their secrets, David Pogue, the lively host of NOVA’s popular “Making Stuff” series and technology correspondent of The New York Times, spins viewers through the world of weird, extreme chemistry: the strongest acids, the deadliest poisons, the universe’s most abundant elements, and the rarest of the rare—substances cooked up in atom smashers that flicker into existence for only fractions of a second.

But first …

Nature ”River Of No Return“  at 7 pm
Central Idaho’s Frank Church – River of No Return Wilderness is the largest contiguous wilderness area in the lower 48 States. Endless rugged mountains, wild rivers, forests, and deep canyons define this land – a home to numerous species of wildlife including wolves, who have just returned after 50 years of near absence – and a young couple, Isaac and Bjornen Babcock, who chose this wilderness for their year-long honeymoon. But what begins as a romantic adventure becomes something much greater for the couple – and a tale of hope and celebration for every life trying to make it in the unforgiving heart of the wilderness.