Scientists are trying to figure out what risks changes in Lake Chad's levels pose to people in the region.
The audio version of a long read on the historical mistakes and cover ups that hampered the response to the devastating Ebola outbreak of 2014.
A disease suspected to be monkeypox is on the rampage in Nigeria. In less than one month, it has spread to seven of the country's 36 states and infected 31 people.
There are rising concerns that rapid deforestation across the Amazon and Southeast Asia could spread to Africa. The continent hasn’t yet seen vast agricultural expansion but it could be on the way.