The 12 most impressive social good innovations from March

It takes a little help from everyone — activists, scientists, engineers and artists — to make the world a better place. And every day, there are new examples of how technology is being used to promote social good. 

Innovators around the world are bringing attention to social issues and providing solutions in new, incredible ways.

And we couldn't keep them to ourselves. Check out the most impressive innovations from March below, and stay tuned for April's best at the end of this month.

1. Pigeon Air Patrol

London equipped 10 domesticated pigeons with tiny backpacks to help monitor air quality and pollution above the city. The backpacks recorded data that was then updated on the Twitter account @PigeonAir. Read more...