You have exceeded your limit for simultaneous device logins.
Your current subscription allows you to be actively logged in on up to three (3) devices simultaneously. Click on continue below to log out of other sessions and log in on this device.
PreS—As a mom helps her daughter get ready for sleep, their routine of pajamas, teeth-brushing, and good-night kisses is accompanied by the repetition of that supremely suggestive word...
Gr 4–7—Mouse skin eyebrows? Spiders in your ears? Humans with tails? And, by the way, what is the only human organ that can regenerate itself? In this abridged edition of the adult book Why Is Yawning Contagious?? (Penguin, 2008), solid scientific information related through unforgettable yet somewhat absurd facts will imprint systematic truths on young minds and provide them with fodder for interesting input to almost any conversation...