A clock frames her, its hands marking hours she was already racing — Silent Spring took its title from a real prospect: a season with no birdsong, every migratory bird killed by a pesticide accumulating up the food chain from the insects it was meant to kill. Those insects appear here embedded in mother-of-pearl, a dragonfly, a beetle, a scatter of bees rendered as precious rather than as pests — specimens preserved the way DDT was already preserving, and ending, entire populations of them. Carson trained as a marine biologist and might have stayed one; instead she became the family's sole income after her parents, sister, and two nieces moved into her household and her father and sister then died, writing at night after full days of paid work. Silent Spring, published in 1962, sold over two million copies, reframed the environment as a matter of federal policy, and led directly to the creation of the Environmental Protection Agency and the restriction of DDT. She wrote most of the book while undergoing treatment for a breast cancer that had already metastasized, and did not live to see the agency her work made necessary. Carson received the Presidential Medal of Freedom posthumously. The insects fixed in pearl around her portrait are not decoration. They are the warning, made permanent.