This video from Aprovecho Research Center (www.aprovecho.org) shows how to build a rocket stove from readily available materials. The rocket stove design uses significantly less fuel than an open fire to accomplish the same amount of cooking. Because the combustion is so efficient, the rocket stove generates much less smoke and carbon monoxide than an open fire. Rocket stoves are becoming increasingly popular with campers and those preparing for emergencies. CAUTION: EVEN THOUGH THE ROCKET STOVE DESIGN BURNS MORE CLEANLY THAN AN OPEN FIRE, YOU MUST STILL PROVIDE ADEQUATE VENTILATION. DO NOT USE INDOORS.