Latest updates from the BBC's specialists in fact-checking, verifying video and tackling disinformation.

BBC analysis editor Ros Atkins looks at why tensions have been running so high in the city - and how we got here.

By Aditya Soni and Deborah Mary Sophia Jan 29 (Reuters) - Big Tech earnings so far this week have sent a clear warning: investors are willing to overlook soaring spending on artificial intelligence if ...