Larger animals tend to live longer than smaller ones, but a new study finds some interesting exceptions to the rule. Some species live far longer than expected based on their size, and an examination of their lifestyles reveals that the most important factor linked to longer life is the ability to fly. Many birds and bats have long lives for their size, but the effect depends on what time of day the animals are active. Being nocturnal or diurnal gives the biggest life span boost compared with being active at dawn and dusk, when more predators may be out. Science News was founded in 1921 as an independent, nonprofit source of accurate information on the latest news of science, medicine and technology. Today, our mission remains the same: to empower people to evaluate the news and the world around them. It is published by the Society for Science, a nonprofit 501(c)(3) membership organization dedicated to public engagement in scientific research and education. To celebrate our centennial, we have made our entire archive available for free. But quality journalism comes at a price. Support the next century of science journalism. Subscribe to Science News for as little as $2.99 a month....