Elon Musk is suing OpenAI, the makers of ChatGPT, arguing it has breached the principles he agreed to when he helped found it in 2015.The lawsuit - which has also been filed against OpenAI boss Sam Altman - says the firm has departed from its original non-profit, open source mission.Musk says that instead of trying to "benefit humanity" - as it was set up to do - OpenAI is focusing on "maximising profits" for major investor Microsoft. Also in the programme, we will talk about offices which been converted into houses in the US.