Science Buddies: "Ask an Expert"

Hello,
I'm looking for ideas for green engineering. Well it doesn't have to be just green engineering i just want something that i will be able to build. Also I was wondering if you guys had any good ideas for Green engineering with cars/motorcycles? I know I'm not giving you guys much to go on. But my previous idea was too expensive and would not be done in time for my science fair. So please if you guys would help i would be very grateful.

Sincerely,
Witchy

Hi, I would suggest to search around in our science fair project ideas section a little to help you narrow down your topic range, because it is very broad right now.
The mechanical engineering section can be found at :
http://www.sciencebuddies.com/science-f ... ?ia=ApMech
The power and energy section can be found at :
http://www.sciencebuddies.com/science-f ... ?ia=Energy
The environmental engineering section can be found at :
http://www.sciencebuddies.com/science-f ... ?ia=EnvEng
Hope this helps!!!

If you do a simple Google search on the terms "student green engineering", you'll find more ideas than you can imagine.