Physicist Kristian Cvecek hangs out in the forest sometimes to take these beautiful pictures of firefly trails, using slow shutter speeds on his camera. Even better than the long exposure shot of a Roomba. [via]
Tracking firefly trails in the forest
Life expectancy changes
The data goes back to 1960 and up to the most current estimates for 2009. Each line represents a country.
Interactive: When Do Americans Leave For Work?
We don’t all start our work days at the same time, despite what morning rush hour might have you think.