Calls are growing for an international ban on the creation of killer robots, which could pose a "grave threat to humanity".
Tiny electronic security tags are being hidden on sheep, as livestock rustling from UK farms becomes an increasing problem.
The long days of summer offer little escape for the scientists of Berlin's Leibniz Institute for Zoo and Wildlife Research.
NASA has revealed the shape of the bubble surrounding our solar system: a deflated croissant.
Mark Zuckerberg has seen his personal wealth hit $100bn (£76bn), 16 years after he co-founded Facebook from his university dorm room.