Brazil’s general election will be one of the biggest tests of its democracy in decades. Here’s a rundown of the candidates and issues to watch.

A recent study by noted climate scientists is particularly bad news for the planet’s most vulnerable regions, including the Arctic and small Pacific islands. 

The Giant of Africa’s next president will have to contend with daunting security and economic challenges.

Khalifa Haftar’s march on the Libyan capital is a bid for control of a fragmented state. Backed by a set of powerful governments, he could carry on the fight for a long time.