Tech Life speaks to some keen users of X in Brazil. What do they think of the ban imposed on the platform that was previously known as Twitter ? Have they moved to other social media, or have they found a way around the restrictions ? Also on Tech Life this week: We find out three things you should know about quantum mechanics. Why is it more difficult for big trucks to make the move from fossil fuels to cleaner electric power ? And AI in construction tech - we speak to the founder of a company harnessing artificial intelligence to help make sense of huge amounts of building industry paperwork. Presenter: Alasdair Keane Producer: Tom Quinn (Photo: The Brazilian flag is seen behind a phone screen displaying the X logo in this illustration photo. Credit: NurPhoto/Getty Images)