Challenge funds can help harness technology for development – here, a team from the international Water Management Institute (IWMI) shows off an open source mobile weather station developed for…

Amal Ali, Emma Phillips |

It was recorded by the Spanish conquistadors, and triggered famines that have been linked to China’s 1901 Boxer Rebellion and even the French revolution. Named by Peruvian fishermen because of its…

Francis Ghesquiere, Nicholas Jones |