[科学美国人60秒] SSS 2015-12-02（在线收听）

 A lot formally low income neighborhoods are becoming /. The people moving in, bring money, and racial biosise, which contributed to them fewing the new suroundings differently. Depending on the race of those who troditionaly live there. That's according to a study, that exams more than seven thousands reviews of two Brooklyn neighborhoods on yield. The online anyone can rate any business review sites. It's in the journal of consumer culture. Researchers look their reviews of two area that have in recent years under gone mathedemic changes, green points and //. Green points is historically Polish neighborhood, that has a long been majority whites, / sites is historically Black neighborhood, that in the last decade, so a seven hunderd percent increase in it's white population. Black are still the majority, but their population is shrinking. Both sites of reviews, review the neighborhoods as up incoming, but that's green points restaurants were seeing as cozy and /. While time / // restaurants were described as greedy and /. Reviewers and white green point express concerns about preserving the neighborhoods culture under were change. Such concerns were / absents in the bad sites reviews, which were more likely to talk about the neighborhoods using words, such as / or get out. Researchers called such attitude / / /. A reference to the over practice pracing some people out of areas or services. The racial bioses in herent in the reviews can influnce popular presuption. As well as prespactive economic investment.