In this intimate talk filmed at TED's offices, energy innovator Amory Lovins shows how to get the US off oil and coal by 2050, $5 trillion cheaper, with no Act of Congress, led by business for profit. The key is integrating all four...

Paul Andersen explains how a respirometer can be used to measure the respiration rate in peas, germinating peas and the worm. KOH is used to solidify CO2 produced by a respiring organism.

What do woolly pigs have to do with climate change? They're part of a vital, ingenious and evolving strategy to take carbon out of the sky and store it safely -- in trees, soils, the ocean, buildings, rocks and deep underground. Every...

Welcome back to SciShow Quiz Show! Katelyn Salem of Kate Tectonics competes against Googleable internet sensation, Hank Green.

Four rocky inner planets and four gaseous outer planets - makes sense, right? But when astronomers turned their eyes to planets beyond our star system they found out that many systems are set up differently. Why?

The star-mapping satellite Gaia has found more than 20 stars speeding across the Milky Way toward intergalactic space. There are just a few things that can slingshot a star out of a galaxy and all of them take some extreme gravitational...

A puzzle involving colliding blocks where the number pi, vey unexpectedly, shows up.

Ray Kurzweil's latest graphs show that technology's breakneck advances will only accelerate -- recession or not. He unveils his new project, Singularity University, to study oncoming tech and guide it to benefit humanity.

We only know 4% of what the universe is made up of. Can we also know what lies beyond our galaxy ... and if there are undiscovered forms of matter? Luckily, we have space messengers - cosmic rays - that bring us physical data from parts...

Finally, after what seems like eons and eons, the end is nigh. We're talking not only about the end of Crash Course Big History, but also the end of everything. The end of humanity and the end of the universe.John and Hank Green will...

Devices that collect data about our bodies need power, but they also might need to be very small or even ingestible. To avoid including batteries in these cases, researchers are looking for ways to harvest energy from the body itself.

What if we could build a global waste disposal service for carbon? In this forward-thinking talk, carbon capture advisor Bas Sudmeijer proposes building CO2 networks: partnerships between cities around the world that would share the cost...

The fossil fuel industry knows how to stop global warming, but they're waiting for someone else to pay, says climate science scholar Myles Allen. Instead of a total ban on carbon-emitting fuels, Allen puts forth a bold plan for oil and...

June 28 is Tau Day! Join SciShow as we celebrate circles by exploring the many uses of twice pi.

The world's most entertaining and useless self-help guide, from the brilliant mind behind the wildly popular webcomic xkcd and the #1 New York Times bestsellers What If? and Thing Explainer



For...

Your brain uses tons of calories, just in its daily work of keeping you alive. So does thinking extra hard use even MORE calories? QQ fills you in!

Pulsars are more than just cool blinking lights shining across the universe. The discovery of the first binary pulsar paved the way for gravitational wave astronomy astronomy today.

An atom smasher, or particle accelerator, collides atomic nuclei together at extremely high energies, using engineering that exploits incredibly cold temperatures, very low air pressure, and hyperbolically fast speeds. Don Lincoln...

All around the world, millions of people are flipping a switch, plugging in, and pressing an 'on' button every second. So how much electricity does humanity use? And how much will we need in the future? Discover how much energy it takes...

An essential part of engineering is engineering design. Today we’ll see how design synthesis helps you put together the components of a process and decide what techniques are needed to solve your problem. We’ll explain the need test...

You might think that fish ride the undercurrents with all their buds to avoid the hungry mouths of predators - safety in numbers, right? But, it turns out, there’s more to consider when asking why fish swim in schools.

Hank responds to viewer questions, and explains what the Higgs boson particle actually IS.

Solar Storms! Moaning Myrtle! Wondering what the frick is behind the solar flares that slammed Earth earlier this week? Hank lays out how that juicy ball of plasma we call the sun causes us trouble from time to time.

Dr. Emmett Chappelle developed a test to find living microbes on other planets, and while it hasn't yet been used to find life amongst the stars, we've found many applications for it here on Earth