It's been said that your body contains billions of atoms from every famous person who ever lived. But is that true? And how do we know?<b<br/>r/>

Hosted by: Savannah Geary (they/them)

When Americans no longer want a car, laptop or clothes, where do some of those goods go? Most end up in the Global South, where millions of people depend on repairing, dismantling or selling them for a livelihood. Environmental groups...

If you've ever looked at the bottom of a disposable bottle or cup, you've probably noticed a recycling symbol. Seeing this, many people assume the item should be put in a recycling bin. Yet many plastics are incapable of being recycled...

Almost all batteries, even single-use batteries, are theoretically rechargeable. That's because the metals and other chemicals are still there in the battery. So chemically speaking, a dead battery is actually not that different from a...

Paul Andersen explains how living organisms exchange matter with the environment. The importance of the surface area to volume ratio is emphasized using a simple mathematical model. The essential chemicals for life; water, carbon,...

The James Webb Space Telescope is a miracle of modern science and engineering. With a 21-foot, gold-coated mirror protected by a sunshield that's the size of a tennis court, it's the world's most powerful telescope and humanity's latest...

Join SciShow as we explore what happens to your stuff after you toss it into the little green bin with the arrows on it.

How do we know how old the Earth is? Learn how we date rocks, the moon, and planets.

Glass is really cool, but where does it come from? Jessi and Squeaks have a pretty sweet activity to show you how glass is made



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Comedian Aparna Nancherla loves to take out the trash. In this funny and sharp meditation on garbage -- "the stuff that our modern, consumerist, carbon-powered culture makes us buy endlessly, and often for no reason" -- she shares...

It seems like a simple question with a straightforward answer, but when you look at the total environmental impact of each type of bag, things start to get a little complicated.

India has one of the world's highest rates of plastic recycling, thanks largely to an extensive network of informal recyclers known as "kabadiwalas." Entrepreneur Mani Vajipey discusses his work to organize their massive efforts into a...

You've filled up your cart and made it to the front of the grocery line when you're confronted with yet another choice: what kind of bag should you use? It might seem obvious that plastic is bad for the environment, and that a paper bag...

Plastic is quickly becoming a problem and we're eager to point fingers, but honestly, the reason there's so much plastic everywhere isn't just because of human negligence.

Phones, TVs, solar panels, and electric car batteries are all made of some rare and unusual elements. As our modern world creates more and more of these technologies, will things go from "rare" to "nonexistent" and what will we do then?

How can we fix water shortages? Well, we know that shortages are a problem and can cause fighting because water is a resource. When you limit a resource, things get scary. But, in this episode of Crash Course Kids, Sabrina talks about...

In this video Paul Andersen describes the four major spheres on planet Earth. The geosphere makes up the mass of the planet and includes the major landforms. The hydrosphere is all of the water and the atmosphere is all of the gases. ...

Sustaining life requires substantial energy and matter inputs. The complex struc- tural organization of organisms accommodates the capture, transformation, trans- port, release, and elimination of the matter and energy needed to sustain...

Howcast - Being busted for re-gifting is like getting nabbed by the IRS—you’re not sorry you did it, you’re just sorry you got caught. Don’t let that happen.

Howcast - Learn about all the things you can recycle in this Howcast video featuring Alegre of Green and Greener.

Howcast -Consider opportunities to get paid to recycle so you can go green and make a buck at the same time.

Howcast - Americans comprise 5 percent of the Earth's population and produce 40 percent of its waste. That may seem irresponsible, but it can change.

Those old cell phone and laptop batteries staring you in the eye? Don't worry, recycling them is easy.

Recycling your garbage is noble, and in many places mandatory. But it also can be very confusing. This guide will clear up the rules.