Instead of playing solitaire on your computer, try playing FreeRice, the online game dedicated to improving your mind and ending world hunger. For each answer you get right, FreeRice donates ten grains of rice through the United Nations World Food Programme. You don’t have to sign up to record your answers; just click on a subject area to begin playing. The subjects include art, chemistry, English, geography, languages, and math. Your grains of rice will add up through just a few minutes of play.