Among the things I learned this week:
* The data collection and storage implementations that Mercedes uses for its F1 cars. (Courtesy: Nathan Matisse/Ars Technica).

* Chengdu is the center of Chinese hip hop. (Courtesy: Amy Qin/NYT)

* Colin Powell was against the tear-down-this-wall line in Reagan’s 1987 Berlin speech. (Courtesy: Wikipedia)