Fui9YW4JYMg nova-mysteries-of-sleep-full-special NOVA | Mysteries of Sleep | Full Special Virtually every animal sleeps. But why? Why do we need to spend nearly a third of our lives in such a defenseless state? kT_CTRCfPnw pbs-america-special-the-amish-shunned PBS America Special | The Amish: Shunned What is it like to be cut off from your faith and your family? e6Uq_5JemrI james-cameron-special-video-message James Cameron | Special Video Message Three-time Academy Award-winning director James Cameron gives special remarks at the AI+ Robotics Summit. XMjLwmgipsA pbs-eons-when-earth-ate-a-planet PBS Eons | When Earth Ate A Planet Where did our unique moon come from? It turns out that lunar rocks brought back by Apollo astronauts are a clue, pointing to the origin of our closest cosmic companion, an origin even stranger than you might imagine… 26ZmKqLNSZ8 pbs-space-time-can-a-particle-be-neither-matter-nor-force PBS Space Time | Can a Particle Be Neither Matter Nor Force? All particles belong to two large groups: fermions like protons and electrons make everything we consider "matter", while bosons like photons and gluons transmit the fundamental forces. WqcoMOxGWfs pbs-eons-theres-no-single-cradle-of-humankind PBS Eons | There's No Single Cradle of Humankind It would take decades for paleontologists to realize that maybe there wasn’t just one so-called "cradle of humankind," and realize that maybe they’d been asking the wrong question all along. JK1BfPw7lnQ pbs-terra-how-big-business-broke-recycling-and-blamed-you PBS Terra | How Big Business broke Recycling and Blamed You Recycling has been the gold standard for fighting pollution for decades. But most plastics can’t be recycled and the companies that push for recycling are the ones often generating the most emissions and waste in the first place. ZJqmyLCfA-I pbs-eons-the-hazy-evolution-of-cannabis PBS Eons | The Hazy Evolution of Cannabis How did such a strange plant like cannabis come to be in the first place? When and where did we first domesticate it? And why oh why does it get us high? mH2aE0lk2XM pbs-terra-why-its-time-to-stop-saving-the-planet PBS Terra | Why It's Time to Stop Saving the Planet We care about the planet. But what if it's time to stop "saving it"? kauDsIeIMxs pbs-eons-when-did-we-start-practicing-medicine PBS Eons | When Did We Start Practicing Medicine? When did practicing medicine - in its varied, complex forms (from sharing medicinal plants to the earliest surgeries) - become something that we actually started doing? uMItdDUYAeA pbs-eons-animals-might-be-much-older-than-we-thought PBS Eons | Animals Might Be Much Older Than We Thought What are animal-like fossils doing in rocks a billion years old, and what does that mean for our understanding of their evolution and geologic time itself? HE2MmAGUgnw pbs-eons-our-most-mysterious-extinct-cousins PBS Eons | Our Most Mysterious Extinct Cousins There was a group of hominins, those creatures more closely related to us than to chimpanzees, that did take a different, parallel journey from our ancestors. ALmS9E87LCg pbs-space-time-does-antimatter-create-anti-gravity PBS Space Time | Does Antimatter Create Anti-Gravity? From hoverboards to flying cars to cloud cities, anti-gravity is a staple of science fiction and our dream of a less Earth-bound future. But in the real universe gravity appears to be a purely attractive force. viTE77xIji0 pbs-eons-beans-and-bees-not-bats-gave-us-butterflies PBS Eons | Beans and Bees, Not Bats, Gave Us Butterflies Turns out, instead of having bats to thank for the existence of butterflies, the groups we should actually be thanking are…bees and beans. CleBC18qoyA pbs-eons-the-huge-extinctions-we-are-just-now-discovering PBS Eons | The Huge Extinctions We Are Just Now Discovering What graptolites tell us is a story of incredible changes in the ocean, of periods where the oceans became poisonous and suffocating before eventually clearing up again. opg6RO9cYnk pbs-eons-when-did-we-stop-being-naked PBS Eons | When Did We Stop Being Naked? Of course, the ancient Egyptians were probably not the first people to ever wear clothing, but we haven’t found any clothes older than the Tarkhan Dress. So how can we figure out when we first started wearing clothes? ARlyiftCQ1o pbs-america-worlds-greatest-natural-fires PBS America | World's Greatest Natural Fires Get up close and personal with great fire icons. e4-ruUSBe8U pbs-special-edgar-allan-poe-buried-alive PBS Special | Edgar Allan Poe | Buried Alive Edgar Allan Poe: Buried Alive draws on the rich palette of Poe's evocative imagery and sharply drawn plots to tell the real story of the notorious author. uM51_Vui9tA pbs-eons-are-giant-animals-inevitable PBS Eons | Are Giant Animals Inevitable? The journey the thunder beasts took to reach such mega proportions from such humble beginnings forces us to ask an important question, one that paleontologists have been asking for more than a century: from an evolutionary perspective, is bigger always better? ZLrMwDD8u_Q pbs-space-time-the-farthest-star-ever-seen PBS Space Time | The Farthest Star Ever Seen! To understand where we came from, how earth, the solar system, the galaxy became what they are today, we need to understand the beginning of time. PNGs-CLgBfk pbs-eons-that-time-the-ocean-lost-almost-all-its-oxygen PBS Eons | That Time The Ocean Lost Almost All its Oxygen This is the story of how our planet rescued itself from extreme conditions in the Cretaceous Period, at the cost of essentially suffocating the oceans for half-a-million years. H5XVxKNzhjQ pbs-eons-did-a-tsunami-swallow-part-of-europe PBS Eons | Did a Tsunami Swallow Part of Europe? What happened to the piece of prime prehistoric real estate known as Doggerland? aYH-KYdgXag pbs-eons-we-helped-make-mosquitoes-a-problem PBS Eons | We Helped Make Mosquitoes A Problem Around 6,000 years ago, in the Sahel region of Africa, a lone female mosquito buzzed through the lush, green savannah. ng1hVUozyuQ pbs-eons-how-the-giraffe-got-its-neck PBS Eons | How The Giraffe Got Its Neck How and why the giraffe's neck emerged in the first place has been a mystery that generations of biologists have argued over – one that has made us reconsider our understanding of how evolution actually works over and over again.