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!

Composting becomes more widespread and accessible all the time, keeping millions of tons of food waste from ending up in landfills every year. But there is one quirk of some composting programs that can be a little annoying: they don't...

In this video Paul Andersen describes the pros and cons of industrial agriculture including: monocropping, irrigation, and the use of pesticides, fertilizers, and GMOs.

Humans have relied on fertilizers to grow their plants for thousands of years. But the production of synthetic fertilizers also requires an immense amount of energy that comes primarily from fossil fuels and therefore contributes to...

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!

From fire to food, check out these life-altering reactions that surround us everyday.

Paul Andersen shows you how to graph data by hand. He explains the required elements of a scatter plot with a best fit line. He shows you how to properly scale and label the axes.

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!

Over its lifetime, the Earth has seen plenty of climate change. About 50 million years ago the planet experienced extreme cooling, and all from a little fern.

Stars blowing up is a surprisingly common occurrence, but who would have thought to search the bottom of the ocean if you were trying to study them?!

Being able to use human feces as fertilizer could be really helpful for human colonies on other planets. It could also be useful for human colonies on THIS planet! And who doesn’t love recycling!?

Well, it wouldn't be too long after we started developing Ecology that we would try to control the environment. In some ways this was helpful and likely prevented a lot of people from starving. But, there have been a few downsides.

Paul Andersen shows you how to graph data by hand. He explains the required elements of a scatter plot with a best fit line. He shows you how to properly scale and label the axes.

Hank talks about the last major way humans are impacting the environment in this penultimate episode of Crash Course Ecology. Pollution takes many forms - from the simplest piece of litter to the more complex endocrine distruptors - and...

Howcast - If you have a confined space but still want to grow tomatoes, patio tomatoes are ideal because they only grow to be 2 feet tall.

Howcast - If that corner garden has become an unsightly jungle, this guide will help control those weeds while protecting your plants from the summer heat.

Howcast - Few things are as comforting as sitting beneath the boughs of a tall shade tree on a hot summer afternoon. Follow this guide and plant one in your own backyard.

Howcast - Dwarf palm trees prefer warm, humid environments. Here are some tips for caring for one.

Howcast - You don't need a green thumb to grow beautiful red and purple flowers. Caring for fuschia plants is as rewarding as it is challenging.

Howcast - Make your own miniature greenhouse from recyclables and get a jump on spring by sowing winter seeds.

Howcast - Learn three ways to make your yard more eco-friendly in this Howcast video featuring Alegre of Green and Greener.

Howcast - Learn how to have a more eco-friendly menstruation with this Howcast video featuring Alegre of Green and Greener.

Howcast - African violets are pretty and can brighten up a room, but without the proper care they'll wither and die like any other flowering plant.

Howcast -Starting and maintaining a garden can be challenging. Make sure you have the supplies you need to help you reap a large harvest.