At a time when many global challenges require transnational solutions, obstacles to data-sharing often keep information from being applied where it is needed. In agricultural development, climate data that could have a significant impact on outcomes are often not being shared. In efforts to combat transnational crime, governments that are now sharing more information among themselves would benefit from increasing cooperation with private-sector actors. And in global health, the balance between intellectual property rights and the need to share life-saving knowledge remains elusive.