From a remote air base in Chad, the Emirates is giving arms and medical treatment to fighters on one side in Sudan’s spiraling war, officials say.

A malaria-carrying species that thrives in urban areas and resists all insecticides is causing outbreaks in places that have rarely faced the disease.

Climate change and the rapid evolution of the insect have helped drive up malaria deaths and brought dengue and other mosquito-borne viruses to places that never had to worry about them.

Working on a remote island, scientists think they can use genetic engineering to block a malaria-carrying species of mosquito from spreading the disease — and do it in just a few months. But governments are wary.

A different way of thinking about mosquito-borne diseases could save billions of dollars, and end them for good, some health experts believe.