On an oppressively hot day in Tanzania’s largest city, Dar es Salaam, Leka Tingitana, the director of aerial research company Tanzania Flying Labs, walks out to the middle of a university cricket field and launches a drone into the bright blue sky.
The $20,000 (£15,000) Swiss-made device circles a patch of sky, precisely mapping out a 1km-square section of the city below. That map will, in turn, form a small section of a larger project mapping possible mosquito breeding sites across the city of roughly eight million people, with the final product becoming a key tool to fight malaria as climate change increases the risk of this deadly disease.
