Out Loud

Travel around the world for a firsthand look at volcanoes - perhaps the most dazzling but destructive natural force on earth. Massive volcanic eruption can turn day into night, releasing the power of an atomic blast, spewing toxic avalanches of lava, gas, and ash. National Geographic Video transports you to some of the world's most notorious volcanoes, including Mount Pinatubo in the Philippines and Japan's Mount Unzen. Join volcanologists in their dangerous quest to forecast eruptions and save lives, putting you in the middle of the explosive excitement and human drama of Volcano: Nature's Inferno.

From vaccines to antibiotics, clean water to nutrition, bio-terror threats to the HIV/AIDS pandemic, the six-part series Rx for Survival: A Global Health Challenge tells the compelling stories of global health challenges and successes. Employing both historical dramatic sequences and poignant current documentary stories, the series showcases key milestones in public health history, such as the eradication of smallpox, alongside modern and future challenges, including SARS, a potential global flu pandemic and recovery from the Asian tsunami catastrophe.

With access to the scientists and engineers responsible for the Curiosity rover's on-the-ground experiments, NOVA captures its landing on Mars

Celebrates 30 years of televised specials by The National Geographic Society.

Dated to the late Stone Age, Stonehenge may be the best-known and most mysterious relic of prehistory. Every year, a million visitors are drawn to England to gaze upon the famous circle of stones, but the monument's meaning has continued to elude us. Now investigations inside and around Stonehenge have kicked off a dramatic new era of discovery and debate over who built Stonehenge and for what purpose. How did prehistoric people quarry, transport, sculpt, and erect these giant stones? Granted exclusive access to the dig site at Bluestonehenge, a prehistoric stone-circle monument recently discovered about a mile from Stonehenge, NOVA cameras join a new generation of researchers finding important clues to this enduring mystery.

The history of these beautiful Islands from their creation as uprising lava to their being studied by Darwin to their modern day inhabitants.

PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and technology, and highlights the people involved in scientific pursuits.

While this noble steed's role in a civilized society remains overshadowed by their automotive equivalent of horsepower, this was not always so. Gallop back in time where wild stallions roamed free in herds aplenty. Back to a time when these magnificent creatures stampeded across the Great Plains of America, the rocky mountain terrain of South America, and the desolate outback of the land down under. Forever branded by Hollywood through countless movies about the Wild West era, this educational video reins in the viewer with an honest look at the history, evolution, and the modern-day need for the domestic horse.

Matthew McConaughey narrates a fascinating look at Christopher Nolan's sci-fi film, 'Interstellar', including scientific foundations, the work of consulting Scientist Kip Thorne, basic film themes, the science behind the search for planets capable of hosting life, space-time and the theory of relativity, the science of wormholes and black holes, crafting the film's visuals based on real scientific observation, the birth of the universe, the Dust Bowl and the evolution of dust as a toxin, the likelihood of future dust storms, the prospects of escaping a dying or doomed planet and the possibilities of colonizing Mars.

Joined famed underwater explorer Dr. Robert Ballard on a quest to solve an archaeological mystery.

At mid-career, queer artist Eve Wood still chases success. “The art world is a horrible business, so why do I keep doing this?” With a solo exhibition looming, she waits in anxious anticipation: “Will anyone come? Will they like my work?” Will Eve ever get the recognition she craves?