Links 2/20/11

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I was reading New Scientist and flipped through to the Last Word column to find this question: How long would it take an average cow to fill the Grand Canyon with milk?
This post is dedicated to J.T. Knuckles.  He died in 1998 at age 58 from silicosis.
I only just noticed that Janet tagged me with the 5 Things meme. Here we go... 5 Things I Was Doing 10 Years Ago:
National Sleep Awareness Week might have been last week, but many of us are feeling the importance of shuteye this week, as we struggle to drag ourselves out of bed at what feels like an inappropriate hour.