Bernd Heinrich

"The surprising, rich life of tree swallows in nesting season -- with Heinrich's beautiful illustrations and photographs -- by the acclaimed naturalist. Heinrich is sparked one early spring day by a question: Why does a pair of swallows in a nest-box close to his Maine cabin show an unvarying preference for white feathers -- not easily available nearby -- as nest lining? He notices, too, the extreme aggressiveness of 'his' swallows toward some other...

Part memoir, part scientific investigation, Racing the Clock is the book biologist and natural historian Bernd Heinrich has been waiting his entire life to write. A dedicated and accomplished marathon (and ultra-marathon) runner who won his first marathon at age thirty-nine, Heinrich looks deeply at running, aging, and the body, exploring the unresolved relationship between metabolism, diet, exercise, and age. Why do some bodies age differently than...