Picture of the Day

Commuters disembark from crowded suburban trains during the morning rush hour at Churchgate railway station on World Population Day in Mumbai on July 11. According to a 2011 census conducted by the government of India, Mumbai has a population of more than 12 million with an estimated population density of about 20,482 persons per square kilometer. (Vivek Prakash/Reuters)

20,482 persons per square kilometer gives each person about 525 square feet, or an area about 23 feet square. I think the blurring makes a pretty pattern.