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Green tech isn't just about cars

Toy hydrogen rocket has endless possibilities.

Discovery Communications

We hope it's clear by now that Crave is dedicated to the use of alternative energy, especially if it means an alternative to expending our own. But we feel that too much green development has been focused on terrestrial pursuits and mundane commuter topics.

Here's an example of what we'd like to see more of: a hydrogen-fuel toy rocket. All it takes, according to GadgetGrid, is some ordinary tap water to be converted into clean-burning fuel for a projectile that can reach 200 feet.

Now that's what we call a useful green technology. If we can just get a camera and a few pumpkins involved, we could really have some fun.