Waste+management

[|Waste] is unwanted materials and objects that people have thrown away. It is often also called trash, garbage, rubbish, or junk.
 * It can be solid, liquid, or gas, or it can be waste heat.
 * Garbage is the waste we produce daily in our homes, including old or unwanted food, chemical substances, paper, broken furniture, used containers, and other things.
 * When waste is a liquid or gas, it can be called an emission. This is usually pollution (hurts plants and animals).

Biosolids, waste treatment, feces, manure, poo

emission - waste that is a liquid or gas

pollution - hurts plants and animals

Current estimates - biosolids produced worldwide per year
 * 400 million tons. People
 * 14 billion tons. Livestock. Mostly cows. Pigs. Chickens.

Problems, opportunities
 * Nitrogen. Fertilizer. Phosphorous. Energy. Natural systems.
 * Pathogens. Bacteria. Parasites. Livestock.
 * energy recovery

Roman flush toilets.

Fish food. Biodigestors.

Origin of feces. - Quirks and quarks podcast.

Ecosystems.

Waste management

Urban waste - humanure

Agricultural
 * livestock - cows, pigs, chickens
 * Fish poo


 * What's the problem?**
 * **Ask** -
 * **Imagine** -
 * **Design, Build** -
 * **Improve** -


 * That's engineering**
 * emission - waste that is a liquid or gas
 * pollution - hurts plants and animals

>.
 * Engineering ideas**

Here are some challenges for you to work on...
 * Do it**


 * News, updates**


 * Learn more...**

..r0d0