efe-epaBy Patricia Martínez Cheju, Tanzania

The buzzing of tens of thousands of marsh mosquitoes can be heard in the rice paddies of Cheju, a rural area on the outskirts of the capital of Zanzibar and the hub of an innovative anti-malarial pilot project.

As farmers look on with curious gazes, a giant drone by DJI- I, a Chinese company, flies over the rice fields and douses them with water.