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Dear Colleagues, Sometimes a question pops in my head from out of no-where...today it was about "sleep"..."What is sleep?" Biologically, Evolutionally, etc. I thought about different common animals and how they sleep, and indeed-- Do they sleep? I worked my way down the "animal kingdom" and got to fish -- Do fish sleep? I typed the exact words in Google...and voila! "Newton - Ask a Scientist" had a good concise answer. :-) I will let you discover that for your own pleasure, and realized that this would be a fun resource for students as well... http://www.newton.dep.anl.gov/about.htm Now I will probably start a new habit of "question of the day" or "week"... Curious minds want to know... Allen