Britain has ruled out any alliance with Syrian president Bashar Assad to combat the threat posed by Islamic State (IS) extremists.
Watch the story of a Kenyan man who bottle-feeds orphaned and baby elephants and protects them from poachers.
Watch Turbo-Roo get to grips with his new set of wheels after he was rescued by a kind-hearted US woman.
High in the mountains of the Democratic Republic of Congo and surrounded by war, this unworldly lava lake keeps its secrets well hidden.
Watch what happened when two brothers and their sister peered at a Beluga whale through the glass at an US aquarium.
Here's a question for the Doctor: how many aliens imagined by science-fiction might actually exist somewhere out there in our universe?
A tiny baby gorilla is receiving round-the-clock care at a US zoo after her mum failed to bond with her.