Eco-friendly alternatives to fossil fuels are venturing beyond Earth—and into space.

Al Williams and I were talking about water rockets on the podcast the other day, and I realized that this was a perfect example of an open-ended simple project. It sounds really easy: you put some ...

Such projects always hold the potential for entertainingly ... which was intended to create a station for charging and launching air-powered water rockets. The process started with a prototype ...

Description: Project BLERP aims to design and construct a reusable liquid rocket engine and launch stand that can be re-used and studied by future students at University of Colorado Boulder. The goal ...