Tracking firefly trails in the forest

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]

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This is an American Workday, By Occupation

I simulated a day for employed Americans to see when and where they work.

Life expectancy changes

The data goes back to 1960 and up to the most current estimates for 2009. Each line represents a country.

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A closer look at the age old question of where there are more bars than grocery stores, and vice versa.

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