The amazing XO laptop
is designed for the half-billion kids in the world who have no electricity and it can run very well on solar energy, batteries, electricity or even pedal power!
" can all be used to create energy and provide great alternatives to using fossil fuels.
We burn tons of coal
— a non-renewable resource that takes MILLIONS of years to make — to create electricity. And burning it creates huge amounts of carbon dioxide that making global warming even warmer.
It's true — two researchers
created a stool that captured the energy of someone sitting down to power LED lights!
Scientists are doing just about everything
but turning the power off in schools!
Water has been used as a power source for thousands of years. Hydropower
rocks because it doesn't pollute and it's super-cheap!
Heat is created continuously deep in the center of the Earth and can be used for geothermal
They all exist, but the foot-powered car
is the greenest, using human power instead of electricity or gas.
and rivers are constantly moving, creating hydropower. The pool only moves when someone does a cannonball!
Good thing: nuclear power plants
don't produce carbon dioxide. Bad: they produce dangerous radioactive waste.
Just how green are you? Count up the number of answers you got right and check the greenometer below: