They nest deep, impacted in the colon wall. Hookworms grip the intestinal wall and suck blood. Cream-colored parasites as thin as a thread. They often come out by the hundreds. One inch long and a head like a pea, perfectly round.
Small ones are white, adults are black.
For centuries, parasites have lived in nightmares, horror stories, and in the darkest shadows of science. Now award-winning writer Carl Zimmer takes us on a fantastic voyage into the secret parasite universe we actually live in but haven't recognized. He reveals not only that parasites are the most successful life-forms on Earth, but that they triggered the development of sex, shape ecosystems, and have driven the engine of evolution. This site maintained by Rudy Torres All rights reserved. No part of this web-site may be copied or reproduced without expressed and written permission.