|Green Living: Powering The World
Every single thing people do requires energy of some kind. In the beginning, when we lived in caves and did everything by muscle power, we mostly just needed energy for our bodies and some wood to burn for cooking and warmth.
Well, we aren't cavemen anymore. We live in a modern society and lead complex lives, and we use a ginormous amount of energy every single day. Oil, coal, natural gas, and nuclear power-these things run our factories and cars, and generate the electricity that lights our cities and heats or cools our homes. They also run our billions of electronic devices, from the widescreen televisions on our walls to the tiny media players in our pockets. As more and more people are born and the world population rises, so does our need for energy.
So why is this a big deal?
It's limited. Most of the energy we use now (up to 80%) is non-renewable, meaning that it's eventually going to run out. As supplies run out, prices go up, and life gets a lot more expensive for everybody.
It's dirty. Most sources of energy create pollution. Burning coal creates sulphur dioxide, which makes bad air and acid rain that kills our lakes. Nuclear power creates radioactive waste that's so toxic that we often don't even know where to put it! Burning oil makes smog, and spilled oil pollutes our seas. The more energy we use, the more pollution we make, and the dirtier our world gets.
So what can we do? The best way that we, as regular citizens, can make a difference is to try to become energy efficient. This means we need to use less energy and get smarter about how we use it.
Try these easy energy-savers:
Ask the adults in your life to: