Topic: power

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A lemon-powered supercar and making the world’s largest lemon battery

Can you power an electric supercar with lemon-power? It depends on the lemon-power. In the video above, science YouTuber and former NASA JPL engineer Mark Rober attempts to fill a 48-kilowatt-hour battery with electri...

What Can You Actually Do About Climate Change?

The average carbon footprint of a person in the US is 16.5 tons –TONS. So, what can you actually do decrease this number and make a meaningful difference? Miriam Nielsen itemizes how our individual choices can hav...

Learning from leaves: Going green with artificial photosynthesis

Releasing too much carbon dioxide into the atmosphere, thanks to the burning of fossil fuels, isn't a good thing. But what if leaves can provide some ideas for how we can turn this 'nuisance gas' into useful chemicals...

The rise and fall of the Inca empire

It was the western hemisphere's largest empire ever, with a population of nearly 10 million subjects. Yet within 100 years of its rise in the fifteenth century, the Inca Empire would be no more. What happened? With...

Powered by Poop at the Straus Family Creamery

Farms around the world are embracing sustainable practices and circular economy models that can help fuel and fund their farming as a part of the business. In this Flipside Science video from the California Academy of...

The complicated history of surfing – TED Ed

Today, surfing is a multi-billion-dollar global industry, with tens of millions of enthusiasts worldwide. For some it’s a serious sport; for others, just a way to let loose. But despite its casual association with fun...

How a failed invention lead to a potentially life-saving new idea

Inventor Hahna Alexander spent years developing an idea that people said they really liked: Shoes that generate power as you walk, making it possible to charge a battery with them. But after starting a company and tes...

How do solar panels work?

The Earth intercepts a lot of solar power: 173,000 terawatts. That’s 10,000 times more power than the planet’s population uses. So is it possible that one day the world could be completely reliant on solar energy? ...

Why don’t perpetual motion machines ever work?

Perpetual motion machines — devices that can do work indefinitely without any external energy source — have captured many inventors’ imaginations because they could totally transform our relationship with energy. Ther...

An ‘Awesome’ 360° View At America’s First Offshore Wind Farm

At 5:30am on May 1, 2017, the Block Island Wind Farm replaced a local diesel generating plant and became America's first offshore wind farm. According to Business Insider, "it will emit about 40,000 fewer tons of gree...

1953: Preserving and operating a wimmenumermolen polder mill

In a 250 year old polder mill in Noord Holland, Eric Zwijnenberg pumps excess water out of the area to avoid flooding. The drainage mill was first rented by his parents as a summer vacation house in 1953... After ...

Water powered hammer (Monjolo) – Primitive Technology

For farmers, millers, engineers, and artisans who live near a river or stream, a monjolo or kara-usu—a water powered hammer—can slowly grind grains into flours or soft stones into powders without repetitive human effo...

Power, an animated exploration of illustrated machines

From animator and painter Dana Sink, Power is an animated short film that explores the forms of illustrated machines over time.

Climbing Wind Turbines for a Living

Converting kinetic energy into electrical power as they spin, wind turbines are a growing part of the world's renewable energy solutions. Rock climber and wind turbine technician Jessica Kilroy inspects, maintains, an...

Can you power your home with a bicycle?

Could you power your house with the energy that's created from pedaling a bicycle? First, let's find out how much energy a house uses and how much energy one bicycling person can store in a battery. Skunk Bear's A...

How to Understand Power – TED Ed

Every day, we move and operate within systems of power that other people have constructed. But we’re often uncomfortable talking about power. Why? Eric Liu describes the six sources of power and explains how understan...

Plastic bottle water wheel power generator experiment

Power plant operator and YouTuber 'Thomas Kim' can charge his iPhone using a stream and a DIY hydro-electric generator made from plastic bottles, some disposable plates, a 3 phase stepping motor, and a rectifier circu...

Can you push a spacecraft with light? – Physics Girl

In this episode from Physics Girl, Dianna Cowern explains how space ships can use sunlight to travel the stars in the same way that boats use wind to move across the seas. While solar sail spacecraft design is a more ...

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