Science blogs are an unexpected source of visual surprises. Here's a visual trick on the eyes kinda like the Margaret Thatcher illusion. And if you're wondering what the latter is:
Maybe I should have saved that for Halloween. But it has spawned an arresting phrase: a "Thatcherized face."
This article available online at:
http://www.theatlantic.com/daily-dish/archive/2007/09/the-tony-blair-illusion/225216/
