Quick links

A couple stories of interest:

• CityLab has a good explanation about why New York stopped building subways 80 years ago, and how that has caused epic transit problems today.
• Developers plan to build a new skyscraper in Chicago for $1 bn. At 433 m, it would be the second-tallest building in Chicago, just 9 m shorter than Willis Tower.
• Credit-card signatures are finally going away in the U.S.

OK, back to being really too busy to breathe this week...