Public Broadcasting Service (U.S.)

Nova explores the ways that scientists are facing the climate challenge. Arctic Sinkholes: Scientists investigate colossal explosions in Siberia and other evidence that rapidly thawing soil in the Arctic is releasing vast amounts of methane, a potent greenhouse gas. What are the implications for our climate future. Weathering The Future: As extreme weather in the U.S. impacts more people--with longer heat waves, more intense rainstorms, megafires,...

Dr. Michael Mosley and botanist James Wong celebrate the physics, chemistry, and biology hidden inside every bite of a next meal. Learn how the hidden chemistry of food keeps bodies fit and healthy; take a global culinary adventure to reveal the science that makes food taste delicious; and discover how the chemistry in food affects the brain and creates the deepest cravings.

Johnny Depp and the cast of Pirates of the Caribbean present the buccaneer lifestyle as a back-stabbing, high-living, hard-drinking world. It makes for an entertaining series, but is it a true depiction of the times?

Oliver Stone's Oscar-winning film Platoon brought the true horror of the Vietnam War to the big screen. Based on Stone's own experiences as a soldier in the conflict, the film captivated millions of viewers all over the world. But how much of the film was real and how much was Hollywood fiction? To reveal the real story, scenes are recreated; a radio transmission from the battle that inspired the movie's climax is uncovered, and Oliver Stone and cast...

Frontline investigates the secret history of the unprecedented surveillance program that began in the wake of September 11th and continues today. As big technology companies encouraged users to share more and more information about their lives, they created a trove of data that could be useful not simply to advertisers, but also to the government. The revelations of NSA contractor Edward Snowden would push Silicon Valley into the center of a debate...

Discover the hidden secrets of the Houses of Parliament, Big Ben, and Westminster Abbey.

Butterflies have been flying around the planet for over 50 million years, and today around 20,000 different species inhabit the globe. From egg to caterpillar to chrysalis to the winged insect, this follow their life stages, highlighting their survival techniques and the new science that is unlocking the secrets of their world and changing the view of these fantastic and yet fragile creatures.

In the 1950s and '60s, an underground network of transgender women and cross-dressing men found refuge at a modest house in the Catskills region of New York. Known as Casa Susanna, the house provided a safe place for them to express their true selves and live for a few days as they had always dreamed of dressing as women without fear of being incarcerated or institutionalized for their self-expression. Told through the memories of those whose visits...

A scientific examination of the top ten disasters that have the capacity to annihilate the human race-and it's not just the usual threats from nuclear weapons, climate change, and meteorite impacts. There are a number of lesser-known but much more probable risks to humankind-threats that humanity has created for itself.

"America is in the midst of the deadliest drug epidemic in US history. In 2017 alone, around 70,000 Americans died from drug overdoses, driven by a dramatic rise in the abuse of opioids like OxyContin, heroin, and fentanyl. It's a slow-motion disaster that is destroying whole communities, with no end in sight. As our nation looks for answers, take an unflinching look at the epidemic through the eyes of those living through it. Along the way, join...