Recommended Web sites:

Just Sleep On It! Sleep May Enhance Memory and Learning.
faculty.washington.edu/chudler/jsleep.html (Neuroscience for Kids).

Jerome Siegel's sleep research page is at www.npi.ucla.edu/sleepresearch/ (UCLA Center For Sleep Research).

How much do animal's sleep?
faculty.washington.edu/chudler/chasleep.html (Neuroscience for Kids).

Lots more about sleep can be found at www.sleepfoundation.org/.

Sohn, Emily. 2006. Getting enough sleep. Science News for Kids (Sept. 13). Available at http://www.sciencenewsforkids.org/articles/20060913/Feature1.asp .

______. 2004. Sleep to remember places and routes. Science News for Kids (Nov. 10). Available at http://www.sciencenewsforkids.org/articles/20041110/Note3.asp .

______. 2003. Memories are made with sleep. Science News for Kids (Oct. 15). Available at http://www.sciencenewsforkids.org/articles/20031015/Note2.asp .

______. 2003. Sleeping soundly for a longer life. Science News for Kids (Feb. 12). Available at http://www.sciencenewsforkids.org/articles/20030212/Note2.asp .

From The American Heritage® Student Science Dictionary, The American Heritage® Children's Science Dictionary, and other sources.

brain waves Electrical signals that pass through the brain in rhythmic cycles.

consciousness The state of being awake and alert to one's surroundings.

ornithology The scientific study of birds.

predator An animal that lives by capturing and eating other animals.

Copyright © 2002, 2003 Houghton-Mifflin Company. All rights reserved. Used with permission.