Nigerian women look to cut chemical use on hair

A decade on, the world has largely forgotten about the Chibok girls, who were kidnapped by Nigeria's Boko Haram Islamist militants. But for victims and their families, like Solomon Maina, who is still waiting for news about his daughter, the tragedy is ongoing.

It is the first of its kind, its developers say: a microrobot which can navigate in a cell network and stimulate individual cells in a targeted manner. The discovery has the potential for new treatment methods for patients battling cancer or other diseases, according to lead researcher Berna Ozkale Edelmann.

Louisiana is home to 25 percent of the US petrochemical industry and is the country's fourth-largest crude oil producer. As a result, it is one of the states with the highest levels of industrial pollution, with disastrous consequences for the health of its citizens.