After drinking a few glasses of water on a hot day, you might be struck with a sudden urge. Behind that feeling are two bean-shaped organs that work as fine-tuned internal sensors. Emma Bryce details how the incredible kidneys balance...

What happens to the clothes we don't buy? You might think that last season's coats, trousers and turtlenecks end up being put to use, but most of it (nearly 13 million tons each year in the united States alone) ends up in landfills....

Composting is a way to turn scraps of food you aren't going to eat anymore into healthy soil for your garden! But how does food turn in to dirt?! Mister Brown and Squeaks take a trip to SoilCycle, a place that makes compost in...

Today Shini explains the law of conservation, beginning with simple, steady-state systems. We’ll discuss conversion and yield, accumulation, and how generation and consumption can affect how much accumulation there is in a system.

Nearly one third of our food ends up in the trash can. There is hope, however, in the form of worms, which naturally convert organic waste into fertilizer. Matthew Ross details the steps we can all take to vermicompost at home -- and why...

In rural India, the lack of toilets creates a big, stinking problem. It leads to poor quality water, one of the leading causes of disease in India, and has a disproportionately negative effect on women. Joe Madiath introduces a program...

Across the world, and throughout history, different peoples have developed different ways to deal with their own waste. And while they didn’t always nail the design, their efforts to keep themselves safe have led to the thrones and...

Here on SciShow, we've talked a lot about poop and the science behind one of the more private aspects of our lives. So, our gift to you is a collection of just SOME of our poop-related episodes. Happy Holidays!

Ever wonder what happens after you flush? You should, because your pee is causing problems! Hank talks about how, and why, human waste is having weird effects on the natural world. We're talking homicidal fish and hermaphroditic frogs...

In this video Paul Andersen explains how economic models, like supply and demand, can be applied to environmental systems. The market forces will not protect environmental services until proper valuation and externalities are...

Join Jessi and Squeaks as they talk about some things you can do to make the earth a better place!

In this collection of classic MinuteEarth videos, we dive into one of our favorite topics, well at least our #2: poop.

It's easy to take waste disposal for granted, so here are six ways modern technology has made your poop safer and less... gross.

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Most of the time you probably don’t have to think too much about your toilet, but billions of people don’t have access to safe sanitation. So, engineers are working on new kinds of toilets that could help solve that!

Honeybees are some of nature's finest mathematicians. Not only can they calculate angles and comprehend the roundness of the earth, these smart insects build and live in one of the most mathematically efficient architectural designs...

Our ability to mine great amounts of energy from uranium nuclei has led some to bill nuclear power as a plentiful, utopian source of electricity. But rather than dominate the global electricity market, nuclear power has declined from a...

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.

There’s no doubt that fish is a great source of protein in one’s diet. But the debate about whether fish farming or commercial fishing is worse for the environment continues and, as you might suspect, there isn’t a straightforward answer.

For centuries, billiard balls were made of ivory from elephant tusks. But when excessive hunting caused elephant populations to decline, they began to look for alternatives. John Wesley Hyatt took up the challenge. In five years, he...

In this video Paul Andersen explains how nuclear energy is released during fission of radioactive uranium. Light water reactors, nuclear waste, and nuclear accidents are also discussed along with the future of nuclear energy.

You ever think about where your trash goes? How long it takes to decompose? And whether your garbage can become ... dangerous? You should! Hank explains the science of trash, how we've dealt with it (or not) over the ages, and both the...

In this video Paul Andersen explains the basics of solid waste including trends over time, basic composition, and disposal. A brief description of the three R's (reuse, reduce, and recycle) is included as ways to minimize waste. ...

Humans have always peed and pooped, but where it goes after we’ve done our business has changed a lot. In fact: The water you just drank may well have been a part of someone’s urine just weeks ago! SciShow explains!

Squeaks and Mister Brown have a leaky faucet! Luckily this is a great chance to learn about how they can save water.



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