Marielle Franco was a vocal critic of police violence and the military deployment in the favelas.
Both the UK and Malaysia faced nerve agent attacks on their soil, but they responded very differently.
Seven US soldiers were on board the military helicopter when it went down, officials say.
A selection of the best photos from across Africa this week.
The town of Karabash used to be at the heart of the Russian copper industry but has fallen on hard times.
Meet the people who are taking matters into their own hands.
Seven-year-old Rouaa has lived most of her life in a refugee camp and dreams of a better life.
Why one disabled BBC journalist has found the reporting of Stephen Hawking's death troubling.
Sergei and Yulia Skripal were poisoned by Novichok nerve agents, the PM says. So what are they?
Former Zimbabwean leader Robert Mugabe gives his first interview since he was ousted.
The government wanted migrants to accept money and a plane ticket to leave voluntarily or face jail.
A plan to open the nation's first safe consumption sites for drug use has split Seattle residents - here's what both sides have to say.
Do you know your Nad Tatrou sa blýska from your Zdravljica, your slovenčina from your slovenščina?
More than 12,000 people are believed to have left one town in Eastern Ghouta in a single day.
The president reportedly told donors: "I said, 'Wrong, Justin... I didn't even know. I had no idea."
The moves are an attempt to stop "nefarious attacks emanating from Russia", officials say.
7 days quiz: It's the weekly news quiz - have you been paying attention to what's been going on in the world over the past seven days?
Peter Frederiksen is handed two life sentences after women's genitals were found in his freezer.
The UK, US, France and Germany say there is "no plausible alternative explanation" to Russian responsibility.
The singer says Snapchat "let us down" over an advert that asked users if they would slap her.
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