Flick on a flashlight in a dark room and you might see cockroaches scurrying for shelter. That’s because the insects also have two very big eyes that wrap around the front and sides of their heads. But studies have shown the roaches see mostly infrared and blue-green colors, so a yellow or red filter on a light might foil the roaches from sensing trouble.

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(from http://www.bug-guy.com/more%20roach%20facts.htm)

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