By Leonie Joubert Sometimes words fall hopelessly short. This might explain the silences between the two botanists as their ...

Climate change is the most pressing problem humanity will face this century. Tracking how the climate is actually changing ...

Egypt or Sudan – why does no one want Bir Tawil? Starting in northeastern Africa is a 2,000sq-km (795sq-mile) uninhabited, arid piece of land that neither Egypt nor Sudan wants to claim as their ...