TED Talks
Want to make change? Let young people tell their stories | Anshul Tewari
New ReviewAs a teenager, social entrepreneur Anshul Tewari didn’t see young voices represented in the conversations that mattered. His solution? A simple blog that has since transformed into Youth Ki Awaaz (Voice of the Youth): India’s largest...
TED Talks
The powerful promise of Earth’s harshest places | Lei Zhang
New ReviewClean energy visionary Lei Zhang loves the Gobi Desert — the most Mars-like place on Earth. Why? Because of the promise it holds to provide the free, abundant solar and wind energy to fuel humanity’s next leap forward. Sharing the story...
TED Talks
A small nation’s surprising solution to unemployment | James Mnyupe
New ReviewHow did a small, economically vulnerable country become a trailblazer in sustainable industry? Clean economy builder James Mnyupe explores how Namibia is teaming up with partners from around the world to turn sun, wind and water into...
TED Talks
Inside India's astonishing solar revolution | Kanika Chawla
New ReviewIn 2014, the world’s second largest coal consumer made a bold promise: to increase its solar capacity from three gigawatts to 100 gigawatts in just eight years. Many people called it overly ambitious, but energy expert Kanika Chawla saw...
TED Talks
Will climate change make your home uninsurable? | Amy Barnes
New ReviewInsurance is the hidden engine that keeps the economy churning, but climate change is making home insurance unaffordable for many people, says climate risk advisor Amy Barnes. She reveals why soaring premiums aren't just bad news for...
TED Talks
The emerging science of finding critical metals | Mfikeyi Makayi
New ReviewYour smartphone, computer and electric car all depend on one thing — critical minerals buried deep underground. But there’s a catch: the mining industry has gotten dramatically worse at discovering new deposits just when we need them...
TED Talks
The world's first "nature superpower" | Ilona Szabó de Carvalho
New ReviewOver the last 40 years, Brazil has lost an area larger than California to deforestation — and 90 percent of the clear-cutting has been illegal, all part of a multi-billion-dollar global environmental crime economy. Civic entrepreneur...
TED Talks
700 million people still live without electricity. Here’s how to fix that | Jacqueline Novogratz
New ReviewImpact investor and Acumen CEO Jacqueline Novogratz unveils a bold vision to bring off-grid solar electricity to 700 million people still living in darkness, transforming lives while slashing emissions. She asks a thought-provoking...
TED Talks
An unexpected plan for peace in the Middle East | Nada Majdalani
New ReviewThe Middle East is a climate hotspot, with many parts of the region set to experience an increase in temperature by five to eight degrees Celsius by the end of the century. Palestinian peace activist Nada Majdalani discusses how the...
TED Talks
The miraculous device that saved my farm — and changed my life | Josephine Waweru
New ReviewExhausted from carrying water up a hill to keep her small farm in Kenya thriving, Josephine Waweru received an unexpected call that offered a nearly unbelievable solution. She shares how one simple device allowed her crops (and her...
Bozeman Science
Agriculture
New ReviewIn this video Paul Andersen describes the pros and cons of industrial agriculture including: monocropping, irrigation, and the use of pesticides, fertilizers, and GMOs.
Crash Course
Yu the Engineer and Flood Stories from China: Crash Course World Mythology
New ReviewOn this Crash Course in World Mythology, Mike Rugnetta is teaching you about floods and deluges, specifically in China. In Chinese myth, flood stories pretty much all revolve around a guy named Yu the Great, or Yu the Engineer. In the...
PBS
Why Do We Love Zombies?
New ReviewZombies are everywhere! Wait, don't panic- we mean in pop culture, not outside your window. But why is that? Bad guys and monsters seem to go through phases: one decade there's a dozen movies about aliens, ten years later it's vampires....
Crash Course
Social Orders and Creation Stories: Crash Course World Mythology
New ReviewIn which Mike Rugnetta sits you down for a little talk about myth as a way to construct or reinforce social orders. Specifically, we're going to look today at stories from around the world that establish or amplify the idea that the...
Crash Course
Galahad, Perceval, and the Holy Grail: Crash Course World Mythology
New ReviewIn which Mike Rugnetta quests for knowledge of the Holy Grail of Mythology. Which is the actual, literal Holy Grail! The cup of Christ! Legends about the Holy Grail are often connected to the British legends of King Arthur, and this...
PBS
Does Axionic Dark Matter Bind Galaxies Together?
New ReviewQuantum mechanics is our best theory of the fundamental nature of reality, but it's usually only distinguishable from familiar classical mechanics on the smallest scales. But it’s also possible that our entire galaxy is filled with a...
PBS
Do We Need a New Dark Matter Model?
New ReviewWe have no idea what dark matter is, other than it’s some source of gravity that is completely invisible but exerts way more pull that all of the regular matter. More than all of the stars, all of the gas, all of the black holes…unless...
PBS
What If Space is Not Empty?
New ReviewSpacetime on its smallest scales is a seething ocean of black holes and wormholes flickering into and out of existence—or so many physicists think has to be the case. But why should we take this spacetime foam seriously if we’ve never...
PBS
What New Science Would We Discover with a Moon Telescope?
New ReviewIn order to see the faint light from objects in deepest space, astronomers go to the darkest places on the planet. In order to listen to their quite radio signals, they head as far from any radio-noisy humans as possible. But there’s...
PBS
Are Many Worlds and Pilot Wave The Same Theory?
New ReviewIt’s hard to interpret the strange results of quantum mechanics, though many have tried. Interpretations range from the outlandish—like the multiple universes of Many Worlds, to the almost mundane, like the very mechanical Pilot Wave...
PBS
Why Did Attosecond Physics Win the Nobel Prize?
New ReviewWhenever we open a new window on the universe we discover something new. Whether it's figuring out how to see to greater distances like with telescopes, or down to smaller size-scales like with microscopes, or perhaps expanding our...
PBS
What If There's A Black Hole Inside The Sun? (Hawking Stars)
New ReviewA fun nightmare sci-fi scenario is the sun being consumed by a black hole. Fortunately the chance of a black hole randomly wandering into our solar system is pretty tiny. That’s good news. But what if it’s already here, hiding in the...
PBS
What if Singularities Do Not Exist?
New ReviewIt's not too often that a giant of physics threatens to overturn an idea held to be self-evident by generations of physicists. Well, that may be the fate of the famous Penrose Singularity Theorem if we're to believe a recent paper by Roy...
PBS
What Happens If We Nuke Space?
New ReviewEMPs aren’t science fiction. Real militaries are experimenting on real EMP generators, and as Starfish Prime showed us, space nukes can send powerful EMPs to the surface. So what exactly is an EMP, and how dangerous are they?