Mark
Sodderhamn, SE

Here’s a crazy idea I just had. You register at an official gym where they have exercise machines that generate power to the electrical grid, like a treadmill or lifting machine, etc. Feedback from the machine ...

Dagor
Elgrab, Libya

Shiny stainless steel window sills on the inside of the house. When the sun shines in. They heat up and radiate heat. Inside the house. The warmth radiated wouldn’t be that much. But some.

Victoria Sadownik
Fort St. John, BC, Canada

My idea is to place a magnetic grid under towns then people could use hovercars to get around and not ruin the environment by using gas.

Glenn Streiff
California, USA

Instead if using 100 billion dollars to build a high speed rail system that will serve a limited pool of Californians, we should explore the possibility of creating a maglev rail system (MLRS) adapted for ...

Michelle
Davidson, SK Canada

Dozens of donation-based websites exist promoting tree planting, locally and globally. But as a city apartment dweller, if I really wanted to plant a tree myself, maybe this idea would work.

Let’s ...