People and farm animals make a lot of poop every day. Poop is often an untapped source for energy and fuel. Some people hope it will become popular as a sustain

Imagine stopping at a gas station, and filling your car with...poop. Fuel made from poop may sound like science fiction, but it's already science fact. This eng

The history of human waste. How I learned to love the excrement; The early history of human excreta; Treasure nigh soil as if it were gold!; The water closet di

Imagine stopping at a gas station, and filling your car with...poop. Fuel made from poop may sound like science fiction, but it's already science fact. This eng

Bows and arrows, firearms, missiles and poop? The progress of invention marches forward through time as humans discover a new material to use in the manufacturi