This is pretty amazing. Stare at the dots on the girls nose for 30 seconds or so, then turn your eyes to a plain surface and blink repeatedly. You will see a color photograph. A drop of sea water magnified 25 times. Some of these things are pretty obvious.
A composite image of the US at night. I want to live in the dark areas. Click on image for a bigger photo. A composite image of the World at night. Click on image for a bigger photo.
