Here’s a little tricky experiment that you can do on your own at home. It’s very simple to do, all you have to have is a solar battery (you can buy that cheaply from a scrap store), a bottle, a toy with wheels you don’t need anymore, and a little bit of super glue.
It runs completely on solar power. Starting from this guy’s idea, I’ll try to improvise a method to recharge my remote controlled toy car from the sun (all big kids must have a RC toy handy, don’t they?)
So, watch the video and start teaching your kid little things. In time, they’ll become bigger and hopefully, if done on a larger scale, save our planet.