Rainforests: Can Tech Help to Protect Trees?

Yasmin Morgan-Griffiths finds out how new technologies are being used to measure the world's forests in more detail than ever before. Suranjana Tewari takes us inside a robotics factory in Beijing. Joe Tidy has exclusive access to the hacker rehab programme steering teenagers away from cybercrime. And, we meet the creator of an AI-powered sign language platform in Kenya.