Marc Cieslak has the highlights from the Game Developer Conference in San Francisco, where thousands in the industry come together to share the latest innovation and emerging trends. Zoe Kleinman heads behind the scenes at Microsoft's HQ as the company celebrates its 50th anniversary. Alasdair Keane meets the robots helping to test and develop the soaps and shampoos we use every day. Plus Laura Goodwin takes us into the world of AI scents.