Lighting from algae: University of Colorado engineers sustained algae luminescence for weeks, pointing to potential for carbon-negative, battery-free lighting. Hydrogen engine leap: German team’s ...

Around the world, chemists are looking for interesting new ways to make energy that do not depend on petroleum. Biofuels, including from algae and other living things, are one amazing possibility. The ...

If you don't mind stretching things a bit, a horse or any other animal used to pull human-made vehicles is a sort of living engine. Our species has been using them forever, and we still do, despite ...