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This is an example of a writing robot Handwriting is quite a difficult task for robots, but children find the result interesting. http://durealeyes.com/robot.html

simple robots

http://news.sciencemag.org/sciencenow/2010/09/superaccurate-clocks-confirm-you.html

Superaccurate Clocks Confirm Your Hair Is Aging Faster Than Your Toenails

Out of sync. Because of the effects of gravity, a clock high on a wall should run ever so slightly faster than a watch just below it.
http://www.newscientist.com/article/dn19654-sharp-stone-age-spearheads-were-cooked-then-flaked.html If you want to make really sharp stone spearheads, do like Stone Age cave dwellers did and cook them first. Palaeoanthropologists have discovered that this two-step trick was invented 50,000 years earlier than they previously thought.

Sharp Stone Age spearheads were cooked then flaked - life - 28 October 2010