In the Blink of a Sceptical I

I've come up with an idea for a small featurette in this blog - occasional short, snappy posts blowing one widely-held belief or another out of the water by simple statement of the facts. In the blink of a sceptical eye, as it were.

Blink 1: Chameleons do not change colour to match their background. The colour change is instead a form of communication, often (but not exclusively) relating to mood. Recent research [via] has suggested that they can change colour for a mere millisecond - long enough to be understood by their fellows but not long enough to be spotted by predators.