- Jump rope has gone through two popularity waves in the United States: in the 1940s and '50s, when ample concrete and clothesline turned Double Dutch into a girl's go-to activity; and from the '70s to the '90s, following the NYPD's "Rope Not Dope" campaign of 1973, which inspired the American Double Dutch League.
- In 2010, Monica Canilao bought this house—"The Treasure Nest," one of a cluster of similar art installation projects—just north of Detroit's Hamtramck neighborhood, for $2,000. The area is a Bangladeshi and Eastern European enclave.
- The median listing price of a home in Detroit in November 2014 was $16,000, a 13 percent increase from the previous year. The median listing price for homes nationwide in 2014 was $214,000.
- Between 2000 and 2010, the black population of downtown Detroit decreased by five percent. The white population grew by three percent.
- In 2009, Jonathan Rothwell and Douglas S. Massey, researchers then at Princeton University, found a strong correlation between racial segregation and zoning policies relating to housing density. "The greater the allowable density, the lower the level of racial segregation," they concluded.
- In the nation's largest cities, the number of college-educated people living in neighborhoods within three miles of downtown increased by 37 percent over the last 15 years. The college-educated population of other neighborhoods and suburbs increased by only 17 percent.
- Between 2000 and 2012, the number of 25- to 34-year-olds in Detroit with a four-year degree decreased by 10 percent. Detroit is the only U.S. metro area among the 51 largest to see this population decline.
- In 2013, the net worth of a typical Millennial (an 18- to 31-year-old) living independently was 30 percent lower than that of someone in the same age bracket 25 years ago. Yet those same Millennials were more likely to own a home, stock, or a retirement account than their Gen X counterparts.
- A 2012 Harris Interactive Poll found that people with tattoos make up 38 percent of U.S. adults aged 30 to 39, 30 percent of adults aged 25 to 29, and 22 percent of adults aged 18 to 24. For the first time since Harris started the poll in 2003, women are more likely than men to have a tattoo.
- In 2012, laser tattoo-removal services saw a 32 percent increase in business from the year before, according to the medical market research firm Patient's Guide. The most-cited reason for removal was "employment."
Submit your response to this story to firstname.lastname@example.org. If you would like us to consider your letter for publication, please include your name, city, and state. Letters may be edited for length and clarity, and may be published in any medium.
For more from Pacific Standard on the science of society, and to support our work, sign up for our email newsletter and subscribe to our bimonthly magazine, where this piece originally appeared. Digital editions are available in the App Store (iPad) and on Zinio (Android, iPad, PC/MAC, iPhone, and Win8), Amazon, and Google Play (Android).