Inhospitable environments that would normally be unreachable become accessible thanks to a new class of robot - Robot Explorers. Robots can help us in difficult tasks like search and rescue operations. Is there any danger in letting machines handle so many tasks that used to belong to us?
Facebook is thought to know more about us than any other business in history, but what does the social network that Mark Zuckerberg built do with all of our personal information? Reporter Darragh MacIntyre investigates how Facebook's powerful algorithms allow advertisers and politicians to target us more directly than ever before, and he questions whether the company's size and complexity now makes it impossible to regulate.
With its survival challenged by a rapidly growing and aging population and by accelerating climate change, where can land-poor Singapore expand? The futurists offer a radical solution: a massive vertical city. What will it be like living high up in the sky?