Nature's giants

"... biologist Graeme Ruxton explains how and why nature's giants came to be so big--for example, how decreased oxygen levels limited the size of insects and how island isolation allowed small-bodied animals to evolve larger body sizes. Through a diverse array of examples, from huge butterflies to giant squid, Ruxton explores the physics, biology, and evolutionary drivers behind organism size, showing what it's like to live large"--Jacket flap.