challenges
For Business
Who We Are
Results
search
Get Started
I want to launch a challenge
Connect to talented problem solvers
I want to solve a challenge
Join our community to win prizes
log in
menu
log in
challenges
For Business
Who We Are
Results
share
Follow
Following
Unfollow
David Cohn
share
Follow
Following
Unfollow
Pacifica, California, United States
message
more
Following
Awards
Following
Challenges
by XPRIZE
1.7K
Big Ocean Button Challenge
Mobile apps to turn ocean data into the products and services we need.
Brands
XPRIZE
Awards
