At first, only a few things are known about the celestial object that astronomers dub Rama. It is huge, weighing more than ten trillion tons. And it is hurtling through the solar system at inconceivable speed. Then a space probe confirms the unthinkable: Rama is no natural object. It is, incredibly, an interstellar spacecraft. Space explorers and planet-bound scientists alike prepare for mankind's first encounter with alien intelligence.

It has been 40 years since the publication of this classic science-fiction novel that changed the way we look at the stars and ourselves. From the savannas of Africa at the dawn of mankind to the rings of Saturn as man adventures to the outer rim of our solar system, 2001: A Space Odyssey is a journey unlike any other.

When itinerant cave diver James Tighe receives an invitation to billionaire Nathan Joyce's private island, he thinks it must be a mistake. But Tighe's unique skill set makes him a prime candidate for Joyce's high-risk venture to mine a near-Earth asteroid - with the goal of kick-starting an entire off-world economy. The potential rewards and personal risks are staggering, but the competition is fierce, and the stakes couldn't be higher. Isolated and pushed beyond their breaking points, Tighe and his fellow 21st-century adventurers must rely on each other to survive....

On a top-secret dive into the Pacific Ocean's deepest canyon, Jonas Taylor found himself face-to-face with the largest and most ferocious predator in the history of the animal kingdom. The sole survivor of the mission, Taylor is haunted by what he's sure he saw but still can't prove exists-Carcharodon megalodon, the massive mother of the great white shark. The average prehistoric Meg weighs in at twenty tons and could tear apart a Tyrannosaurus rex in seconds.

Ana Dakkar is a freshman at Harding-Pencroft Academy, a five-year high school that graduates the best marine scientists, naval warriors, navigators, and underwater explorers in the world. Ana's parents died while on a scientific expedition two years ago, and the only family's she's got left is her older brother, Dev, also a student at HP. Ana's freshman year culminates with the class' weekend trial at sea, the details of which have been kept secret. She only hopes she has what it'll take to succeed.

The Ice Diaries tells the incredible true story of Captain William R. Anderson and his crew's harrowing top-secret mission aboard the USS Nautilus, the world's first nuclear-powered submarine. Bristling with newly classified, never-before-published information, The Ice Diaries takes listeners on a dangerous journey beneath the vast, unexplored Arctic ice cap during the height of the Cold War.

Humans, unlike other animals that are drawn to water, are not natural-born swimmers. We must be taught. Our evolutionary ancestors learned for survival; now in the 21st century, we swim in freezing Arctic waters and piranha-infested rivers to test our limits. Swimming is an introspective and silent sport in a chaotic and noisy age; it’s therapeutic for both the mind and body; and it's an adventurous way to get from point A to point B. It's also one route to that elusive, ecstatic state of flow.

When the Imagine Network commissioned a documentary on mermaids, to be filmed from the cruise ship Atargatis, they expected what they had always received before: an assortment of eyewitness reports that proved nothing, some footage that proved even less, and the kind of ratings that only came from peddling imaginary creatures to the masses.

Susan Casey is our premiere chronicler of the aquatic world. For The Underworld she traversed the globe, joining scientists and explorers on dives to the deepest places on the planet, interviewing the marine geologists, marine biologists, and oceanographers who are searching for knowledge in this vast unseen realm. She takes us on a fascinating journey through the history of deep-sea exploration, from the myths and legends of the ancient world to storied shipwrecks we can now reach on the bottom.

Based on his historic mission to the International Space Station, Ask an Astronaut is Tim Peake's guide to life in space and his answers to the thousands of questions he has been asked since his return to Earth. With explanations ranging from the mundane (how do you wash your clothes or go to the bathroom while in orbit?) to the profound (do humans have a duty to explore the unknown?), all written in Tim's characteristically warm style, Tim shares his thoughts on every aspect of space exploration.

At the turn of the 22nd century, scientists make a breakthrough in human spaceflight. Through a revolutionary method known as somaforming, astronauts can survive in hostile environments off Earth using synthetic biological supplementations. With the fragility of the body no longer a limiting factor, human beings are at last able to journey to neighboring exoplanets long known to harbor life. A team of these explorers, Ariadne O’Neill and her three crewmates, are hard at work in a planetary system 15 light-years from Sol, on a mission to ecologically survey four habitable worlds.

Blending personal experience and real-world events in a fictional wrapping, Operation Ivy Bells offers a never-before-seen glimpse of these heroic men fearlessly facing death to gather the intel that tipped the scales to win the Cold War.

When Nicole Stott first saw Earth from space, she realized how interconnected we are and knew she had to help protect our planetary home. In Back to Earth, Stott imparts essential lessons in problem-solving, survival, and crisis response that each of us can practice to make change. She knows we can overcome differences to address global issues, because she saw this every day on the International Space Station. Stott shares stories from her spaceflight and insights from scientists, activists, and changemakers working to solve our greatest environmental challenges.

Major Chenesai Okonkwo is an auditor for the Sub-Saharan Union. Her mission: to find out if the Sixth Expeditionary Force's newly discovered time gate has been compromised. Is the union's revolutionary discovery already doomed, 11 years in the future? But there is another, more personal mission. The possible murder of her husband remains unsolved. But are the two things connected? Can she navigate the world of aliens, spies, politics and time paradoxes to find the truth, and save her people's future?

In this remarkable, groundbreaking audiobook, a documentarian and conservationist, determined to dispel misplaced fear and correct common misconceptions, explores in-depth the secret lives of sharks - magnificent creatures who play an integral part in maintaining the health of the world’s oceans and ultimately the planet.

Sealab is the underwater Right Stuff: the compelling story of how a U.S. Navy program sought to develop the marine equivalent of the space station - and forever changed man's relationship to the sea. While NASA was trying to put a man on the moon, the U.S. Navy launched a series of daring experiments to prove that divers could live and work from a sea-floor base.

On a foggy July evening in 1956, the Italian cruise liner Andrea Doria, bound for New York, was struck broadside by another vessel. In eleven hours, she would sink nearly 250 feet to the murky Atlantic Ocean floor. Thanks to a daring rescue operation, only 51 of more than 1,700 people died in the tragedy. But the Andrea Doria is still taking lives. Considered the Mt. Everest of diving, the Andrea Doria is the ultimate deepwater wreck challenge.

Late in the 21st century, Earth receives what looks like an urgent plea for help from planet Proxima Centauri b in the closest star system to the Sun. Astrophysicists suspect a massive solar flare is about to destroy this heretofore-unknown civilization. Earth's space programs are unequipped to help, but an unscrupulous Russian billionaire launches a secret and highly-specialized spaceship to Proxima b, over four light-years away.

Under the guidance of James Calvert this nuclear submarine had navigated through polar ice packs, braved atrociously cold conditions, and broken through layers of thick ice to arrive at their destination; the northernmost point of the world. This mission, however, was not just about completing a seemingly impossibly feat of Arctic exploration. It also had huge implications for military strategy during the height of the Cold War.

A decade after the Cold War, a violent explosion sent the Russian submarine Kursk to the bottom of the Barents Sea. The Russians claimed an outdated torpedo caused the incident and refused help from the West while 23 survivors died before they could be rescued. When Russian naval officers revealed evidence of a collision with a US spy sub, Vladimir Putin squelched the allegations and fired the officers. In Spies of the Deep, W. Craig Reed shatters the lies told by both Russian and US officials and exposes several shocking truths.

On the night of February 17, 1864, the tiny Confederate submarine HL Hunley made its way toward the USS Housatonic just outside Charleston harbor. Within a matter of hours, the Union ship’s stern was blown open in a spray of wood planks. The explosion sank the ship, killing many of its crew. And the submarine, the first ever to be successful in combat, disappeared without a trace. For 131 years the eight-man crew of the HL Hunley lay in their watery graves, undiscovered.

The legendary explorer of the Titanic shares inside stories of danger, suspense, and discovery - plus previously untold stories about his own dyslexia and how it has shaped his life.

At the turn of the 22nd century, scientists make a breakthrough in human spaceflight. Through a revolutionary method known as somaforming, astronauts can survive in hostile environments off Earth using synthetic biological supplementations. With the fragility of the body no longer a limiting factor, human beings are at last able to journey to neighboring exoplanets long known to harbor life. A team of these explorers, Ariadne O’Neill and her three crewmates, are hard at work in a planetary system 15 light-years from Sol, on a mission to ecologically survey four habitable worlds.

In 2007, Roz Savage set out to row 8,000 miles across the Pacific Ocean—alone. Despite having successfully rowed across the Atlantic the previous year, the Pacific presented the former office worker with unprecedented challenges and overpowering currents—both in the water and within herself. Crossing Earth’s largest ocean alone might seem a long way removed from everyday life, yet the lessons Roz learned about the inner journey, the ocean, and the world are relevant to all of us.

The crew of Moonbase Columbus makes an amazing discovery on the far side of the Moon - a massive alien structure is erecting itself, built up atom by atom by living machines, microscopically small, intelligent, and unstoppable, consuming everything they touch. The mysterious structure begins to expand and take shape, and its creators begin to multiply. Is this the first strike in an alien invasion from the stars? Or has human nanotechnology experimentation gone awry, triggering an unexpected infestation?

It has been 40 years since the publication of this classic science-fiction novel that changed the way we look at the stars and ourselves. From the savannas of Africa at the dawn of mankind to the rings of Saturn as man adventures to the outer rim of our solar system, 2001: A Space Odyssey is a journey unlike any other.

In the tradition of Shadow Divers, the story of the courageous men who dived on the last sunken U-Boat off the Eastern Seaboard. On April 16, 1944, the tanker SS Pan Pennsylvania was torpedoed and sunk by the U-550. In return the sub was sent to the bottom by three destroyer escorts that were guarding the convoy. For more than 60 years the location of the U-boat's wreck eluded divers. In 2012 a team found it.

The Ice Diaries tells the incredible true story of Captain William R. Anderson and his crew's harrowing top-secret mission aboard the USS Nautilus, the world's first nuclear-powered submarine. Bristling with newly classified, never-before-published information, The Ice Diaries takes listeners on a dangerous journey beneath the vast, unexplored Arctic ice cap during the height of the Cold War.

Red November is filled with hair-raising, behind-the-scenes stories that take you deep beneath the surface and into the action of the Cold War. Few know how close the world has come to annihilation better than the warriors who served America during the tense, 45-year struggle known as the Cold War. Yet for decades, their work has remained shrouded in secrecy.

On October 4, 1957, the Soviet Union launched Sputnik I, and the space race was born. Desperate to beat the Russians into space, NASA put together a crew of the nation's most daring test pilots: the seven men who were to lead America to the moon. The first into space was Alan Shepard; the last was Deke Slayton, whose irregular heartbeat kept him grounded until 1975. They spent the 1960s at the forefront of NASA's effort to conquer space, and Moon Shot is their inside account of what many call the 20th century's greatest feat - landing humans on another world.