—@milked_ via Twitter
Smelt decommissioned weapons into musical instruments. —@casinclair via Twitter
Climate app tracks local CO2 levels. —@big_big_love via Instagram
Global oral history keeps memories alive. —@johnkellybabb via Instagram
Save the world by planting trees. —Lílá Tückér via Facebook
Redistribute medial supplies to the underinsured. —@jesmakes via Instagram
Community-based renewable energy power grids. —@uniquetoybox via Twitter
Digital democracy with backing in blockchain. —@jackranado via Twitter
Life after death—donate your DNA. —@beyond_mike via Instagram
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