TED Talks
TED: How biochar removes CO2 from the air -- and helps farmers thrive | Axel Reinaud
Biochar is a kind of charcoal that removes CO2 from the atmosphere, helping yield healthy crops and even producing abundant renewable energy in the form of electricity as it's made. This exciting climate change fighter is ready for...
Crash Course
Frankenstein Part II: Crash Course Literature 206
In which John Green continues to teach you about Mary Shelley's Frankenstein. You'll learn about romantic vs Romantic, the latter of which is a literary movement. John will also look at a few different critical readings of Frankenstein,...
SciShow
Electric Eels Bigger Than You Zap in PACKS
We’ve long thought that electric eels hunt individually…until we discovered a lake where one species hunt, and zap, in packs!
TED Talks
Bill Gross: A solar energy system that tracks the sun
Bill Gross, the founder of Idealab, talks about his life as an inventor, starting with his high-school company selling solar energy plans and kits. Learn here about a groundbreaking system for solar cells -- and some questions we haven't...
Crash Course
The Nervous System, Part 2 - Action! Potential!: Crash Course A&P
What do you and a sack of batteries have in common? Today, Hank explains. -- Table of Contents: Ion Channels Regulate Electrochemistry to Create Action Potential 4:51 Resting State 3:22 Depolarization 6:09 Repolarization 7:35...
SciShow
Could Solar Panels in Space Solve all Our Energy Needs?
We need more solutions for our energy needs, and one idea is straight out of science fiction: Solar panels, in space.
TED-Ed
TED-ED: How do fish make electricity? - Eleanor Nelsen
Nearly 350 species of fish have specialized anatomical structures that generate and detect electrical signals. Underwater, where light is scarce, electrical signals offer ways to communicate, navigate, find, and sometimes stun prey. But...
Crash Course
Water and Solutions -- for Dirty Laundry: Crash Course Chemistry
Dihydrogen monoxide (better know as water) is the key to nearly everything. It falls from the sky, makes up 60% of our bodies, and just about every chemical process related to life takes place with it or in it. Without it, none of the...
TED-Ed
TED-Ed: The cockroach beatbox - Greg Gage
By dissecting a cockroach ... yes, live on stage ... TED Fellow and neuroscientist Greg Gage shows how brains receive and deliver electric impulses -- and how legs can respond. (Launching a series on Awesome Nature) "The Cockroach...
TED Talks
TED: The thrilling potential for off-grid solar energy | Amar Inamdar
There's an energy revolution happening in villages and towns across Africa -- off-grid solar energy is becoming a viable alternative to traditional electricity systems. In a bold talk about a true leapfrog moment, Amar Inamdar introduces...
SciShow
Why Can't I Put Metal in the Microwave?
We know we're not supposed to put metal in the microwave, but why? We don't microwave silverware but what about Hot Pocket wrappers? They have metal on the inside. How does that work? Let Michael Aranda explain.
Bozeman Science
Hydroelectric Power
In this video Paul Andersen explains how energy can be harnessed was water moves through a turbine. Three types of systems are discussed in the video; run-of-the-water, impoundment, and tidal. Several advantages and disadvantages of dams...
SciShow
Can Animals Predict Earthquakes?
You might have heard about animals behaving oddly right before an earthquake hits. But are these reports more than just anecdotes?
MinuteEarth
Why Can't We Get Power From Waves?
Wave power hasn’t yet made a splash because it’s hard to use waves to spin turbines, and because the sea is a harsh place to build things.
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To learn more, start your googling with these...
TED Talks
Robert Gordon: The death of innovation, the end of growth
The US economy has been expanding wildly for two centuries. Are we witnessing the end of growth? Economist Robert Gordon lays out 4 reasons US growth may be slowing, detailing factors like epidemic debt and growing inequality, which...
SciShow
Baby Zebrafish Eyes Work Kind of like Real-Time Photoshop
Some fish have superpowers! Zebrafish eyes can boost the color and contrast of what they see and baby whale fish are electric.
SciShow
Dimmer Switches: Secretly Strobe Lights
Having the ability to dim your lights seems like a pretty simple thing, but modern dimmer switches work in a surprisingly cool way!
SciShow
Batteries: A Big Idea That Turned on the World
Even though they power many of our modern conveniences, batteries have a long history. Hank explains how and why these marvels work and what they've been used for over the past 2,000 years!
TED Talks
TED: electrical experiments with plants that count and communicate | Greg Gage
Neuroscientist Greg Gage takes sophisticated equipment used to study the brain out of graduate-level labs and brings them to middle- and high-school classrooms (and, sometimes, to the TED stage.) Prepare to be amazed as he hooks up the...
TED Talks
TED: A new way to remove CO2 from the atmosphere | Jennifer Wilcox
Our planet has a carbon problem -- if we don't start removing carbon dioxide from the atmosphere, we'll grow hotter, faster. Chemical engineer Jennifer Wilcox previews some amazing technology to scrub carbon from the air, using chemical...
TED Talks
TED: How fear of nuclear power is hurting the environment | Michael Shellenberger
We're not in a clean energy revolution; we're in a clean energy crisis, says climate policy expert Michael Shellenberger. His surprising solution: nuclear. In this passionate talk, he explains why it's time to overcome longstanding fears...
SciShow
5 Measurements You Might Not Realize Are Named After Scientists
Units are a major way we describe the world around us, and by looking at the scientists some of them are named after, we can get a sense of how we’ve learned so much about our universe.
SciShow
Victorian Pseudosciences: Shocking People Back to Health
As 18th-century science and medicine brought properties of electricity to light, some Victorian doctors decided that putting sick people in a bathtub and shocking them might be a good idea.
Crash Course
The History of Electrical Engineering: Crash Course Engineering #4
Next stop on our tour of engineering’s major fields: electrical engineering. In this episode we’ll explore the history of telecommunications, electric power and lighting, and computers. We’ll introduce topics like magnetism, electrical...