Spinach juices up batteries.

• Position: Technology - Brief Article

Parents, doctors, and even Popeye have long talked up the powerful properties of spinach. Now, an unlikely group has joined in: researchers seeking to give batteries extra punch. Scientists have found a way to harness the energy that plants use during photosynthesis to extend battery life in cell phones, laptops, and other portable electronic devices. Spinach proved to be ideal for this project because it's cheap and contains lots of chlorophyll--the green pigment that enables plants to convert light into nutrients. When a mixture containing liquefied...