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 ...

To get the rocket to work properly, we have to get the right amount of water in the bottle. Not as easy as it sounds. Try experimenting yourself with different volumes of water. Attach one end of ...

The rocket stove was able to effortlessly heat 80 liters of water to 70°C in a little over ... Rocket stoves themselves can be remarkably simple for how well they work, and can even be built ...

Whether you need to purify water, cook food ... the rocket stove is an excellent option. This rocket stove build is a simple, effective way to make the most of your fuel in survival or camping ...