Google engineers teamed up with Teach for America to work with Minnesota students on projects that sought to pose technological solutions to some of society’s biggest challenges.

Check out what’s been happening on Google+ this summer.

Learn how the Michigan Trails and Greenways Alliance uses Google Map Maker to add new cycling routes around the city of Detroit, creating a more comprehensive map and improving biking directions for the entire community.

http://mapmaker.google.com

A demonstration of Google Wallet’s security features, including the mobile app PIN, and the ability to remotely disable and reset your mobile wallet from wallet.google.com/manage

A demonstration of the Google Wallet online service, and how you can pay online by signing into your account anywhere Google Wallet is accepted.

A demonstration of the Google Wallet mobile app, and how you can pay in-store by tapping your phone anywhere contactless NFC payments are accepted.

Sometimes the best answer to your question is not always a single entity, but a list or group of connected things. Now, with the Knowledge Graph, Google can answer these questions, too, with a new interactive carousel at the top of your results page. Learn more at g.co/knowledge

Photographer John Butterill discovered a way to share his photo walks through Google+ Hangouts. Almost immediately photographers around the world began volunteering to share their view of the world with people whose mobility was limited.