the 27-year-old decided to come up with a better solution: learning language through talking. He launched Poliglota, a platform that organizes conversation groups for people seeking to learn a new language. The groups gather in public spaces such as parks, coffee shops and bars to converse. Anyone can join or host a group for free.

Today sees the close of the current ‘World’s Fair,’ in Milan, Italy. The six-month-long Expo Milano 2015 showcased tech innovation, especially from Italy, and while much will be written about the cost and legacy of the event, I’d like to argue that the host country made a clever use of this opportunity to show off its startups.

President Obama’s newly installed defense secretary, Ashton B. Carter, toured Silicon Valley last week to announce a new military strategy for computer conflict, starting the latest Pentagon effort to invest in promising start-ups and to meet with engineers whose talent he declared the Pentagon desperately needed in fending off the nation’s adversaries.