There are two great environmental challenges that we face today: one is the need for clean, renewable electrical energy and the other is a way to convert massive amounts of back to oxygen in the atmosphere. French biochemist Pierre Calleja may have
River Plant Aquarium by Mathieu Lehanneur. A self contained living local river ecosystem for indoors. “This aquarium is not only an interesting home décor piece, but also a fish hatchery and vegetable.
Instructables user, TheNaib, has written a tutorial on how to create a solar thermal water heater for under five dollars. It will involve a fair amount of DIY, but nothing too complicated. designed as a fun project, but with some tweaking it could