4 ms·
Announcing the 12 challenge winners from Hack4good
- stamse 12y agoYAY!
- albertolondon 12y agoJust in time for Sunday's People Climate March.
- rekatz 12y agoWant to add - all the teams did a remarkable job. There really are no winners or losers - any one of these apps can have significant impact on our planet. We hope many of them do.