Impact investment promises to reduce poverty by supporting bigger businesses. But will it face the same problems as its predecessor, microfinance? We talk to Harold Rosen, who is at the forefront of the new movement.

In China, the latest government five-year-plan has set out tough targets to limit carbon emissions. But wealthy Chinese people are just at the beginning of their love affair with cars. Justin Rowlatt meets boy-racer Jason Yi and his father, Jimmy.

Piracy is on the rise. More than 700 people are now being held for ransom on ships along the Somali coast. Lesley Curwen speaks to Dr Philip Belcher from the Bahamas Maritime Authority about a recent hijack attempt on a ship, and asks Efthimios Mitropoulos of the International Maritime Organisation what is being done to stop these attacks.

And look closely at that innocent tissue box on the corner of your desk - it could be secretly recording your every word. We visit the Spymaster shop in London and talk to its director, Julia Wing about industrial espionage. Show less