PBS
Why Only Earth Has Fire
New ReviewTo get fire, which exists only on Earth, it took billions of years of photosynthesis – which means fire can’t exist without life. And fire and life have been shaping each other ever since.
SciShow
The World’s Biggest Fusion Reactor Doesn’t Do Anything
When ITER's tokamak finally comes online (as of July 2024, that's 2034 for its first round of research, and 2039 for deuterium-tritium fusion), it will become the world's biggest fusion reactor. But don't hold your breath for a green...
SciShow
Could Balloons and Elevators Replace Rockets for Space Travel?
From hypothetical magnetic levitation trains and space elevators that aren't even attached to the ground, to very real space cannons tested in the 1960s, humans have come up with a lot of ways to hurl stuff into outer space. Hosted by:...
MinuteEarth
Why Hurricane Paths Are Weird
Hurricane path prediction seems straightforward, until it is not – that’s because hurricanes can encounter atmospheric effects that turn their paths into erratic nonsense.
TED Talks
TED: Luxury, not landfill — the waste-free future of fashion | Joon Silverstein
Fashion is a huge part of the world's waste problem, but it doesn't have to be. Coachtopia founder Joon Silverstein shows how her company creates new designs from the waste products of another, a circular process that cuts the need for...
TED-Ed
TED-Ed: The world’s longest-burning fires | Emma Bryce
In 1997, a fire began in Indonesia that would rage for almost a year. Despite being one of the largest fires in recorded history, for months at a time it burned without a flame. This might sound like a uniquely freaky fire, but it’s...
PBS
Ghana becomes dumping ground for the world’s unwanted used clothes
An estimated 20 million people are thought to earn their livelihoods in the global waste industry by collecting, disposing, repairing or repurposing a wide range of materials and products. However, the cost and consequences of handling...
MinuteEarth
Why Are Leaves Green? Part 2
Still wondering why leaves are green and not purple or even black? CHLOROPHYLL! It's how leaves work.
SciShow
How Long Have We Been Playing with Fire?
So we know that humans are pretty good at making fires, but how long have we been barbecue pit masters? Turns out the evidence is hardly a smoking gun.
SciShow
How Do We Know How Old the Earth Is?
In the wake of World War 2, Clair Patterson embarked on a scientific quest to find out how old the Earth really is. His hard work paid off, but it also revealed a modern danger.
TED Talks
TED: A playbook on financing climate solutions | Nili Gilbert and David Blood
Tackling climate change costs a lot of money — and the financial sector is key to getting that money flowing. In a wide-ranging conversation, sustainable investment leaders Nili Gilbert and David Blood discuss where progress is being...
SciShow Kids
How Will We Get To Mars? | Let's Explore Mars! | SciShow Kids
Mars has a ton of amazing features waiting to be explored, but we have to get there first. Thanks to our partners at the Boston Museum Of Science for helping us think about everything we need to plan a trip! Squeaks and Jessi would love...
SciShow
Atlas: The Little Rocket That Still Can
In 1962, John Glenn went into orbit on an Atlas rocket, and thus began a family of rockets that lasted for 60 years!
SciShow
Blue Is the New Green (For Hydrogen)
We all want green energy to stop climate change, and one option is hydrogen. But achieving green hydrogen is tough, so some want to consider so-called blue hydrogen instead. Support for this video provided by Gates Ventures.
PBS
100 Years of Relativity + Challenge Winners!
The results are in - on this weeks episode of Spacetime we reveal the answer to our Asteroid Challenge, as well as our T-shirt winners! Check out who saved the world!
TED-Ed
TED-Ed: This is what happens when you hit the gas | Shannon Odell
In 2015, two men drove a Volkswagen across the US on just over 100 gallons of fuel. Their 81-mile-per-gallon performance doubled the car's estimated fuel rating, and set the record for the lowest fuel consumption ride of a diesel car....
TED Talks
TED: The first-ever cargo ship powered by green fuel | Morten Bo Christiansen
The shipping industry is vital to the global economy, but it's also a huge contributor to the climate crisis. Morten Bo Christiansen, a leader of the energy transition for the global shipping company A.P. Moller – Maersk, talks to TED's...
SciShow
Meet Nell: The Skeleton Rocket That Flew
In 1926, Robert Goddard launched Nell — the very first (successful) liquid fuel rocket. But Nell wasn't built like other modern rockets, including a notable lack of casing and an exhaust nozzle suspended above the propellant tanks.
SciShow
Should We Put Wind Turbines on Kites?
The future of wind energy is solarpunk. At least according to some manufacturers who want to put wind turbines on kites, blimps, or just generally up in the air where wind can generate green energy and fight climate change more efficiently.
SciShow
The Rocket That Took Tortoises to the Moon
Months before Apollo 8 took humans around the Moon for the first time, two Russian tortoises (plus some other lunar tourists) had already made it back home. This was Zond 5 — the first mission to return to Earth after visiting another...
MinuteEarth
What if We Replaced Nuclear With Potatoes
Energy use can be confusing – I mean, how do you compare gasoline in your car to electricity piped to your house? That's why we made these things spud-tacularly simple.
SciShow
The Climate Crisis Is Changing the Circle of Life
When you think about the impact of climate change on the circle of life, you likely picture polar bears or Bengal tigers struggling in new conditions. But the impacts on the world go all the way down to the tiniest creatures who do some...
SciShow
Cloudy With A Chance Of Aliens: How We Look for Extraterrestrial Life
What do astronomers look for when they study exoplanets for signs of alien life? Hank explains how space telescopes are already yielding tantalizing clues of what other worlds might hold -- including water! -- and how the next generation...