Much of my work as a Pappalardo Fellow has involved some puzzles that arise in certain string theories because of a very peculiar type of particle, called a tachyon. Here I’ll explain what a tachyon is and why it’s important to solve these puzzles. Along the way we’ll compare and contrast string theories with conventional particle theories. I should first clarify that when I say “theory” here I...

University Press. All rights reserved. No part of this book may be reproduced in any form by any electronic or mechanical means (including photocopying, recording, or information storage and retrieval) without permission in writing from the publisher, except for reading and browsing via the World Wide Web. Users are not permitted to mount this file on any network servers.

Data from four multicenter trials1-4 indicates that hypothermia is effective in diminishing brain injury in some neonates with moderate to severe hypoxic-ischemic encephalopathy (HIE). Currently, hypothermia is emerging as a standard of care for certain neonates with HIE. Meta-analysis suggests the therapy may prevent long-term neurologic deficits in one neonate for every 8 treated.5 Since hypo...