A global shortage of timber is causing challenges for the construction industry. David Hopkins is managing director of the Timber Trade Federation, and tells us what has caused the problem. And we hear about a shortage of garden sheds in the UK from retail analyst Kate Hardcastle. Also in the programme, the BBC's Theo Leggett reports on the growth of the British electric commercial vehicle maker Arrival. Only around 2% of people living in Africa are fully vaccinated against coronavirus, but the African Union hopes to reach 60% within a year. It has signed a deal for 400 million shots of Johnson and Johnson's vaccine, and Dr Ahmed Ogwell, deputy director of the Africa Centre for Disease Control and Prevention, discusses the challenges the continent faces in getting shots into people's arms. Barcelona's football star Lionel Messi is transferring to Paris St Germain, subject to a medical examination. Messi's biographer Guillem Balague tells us what is known about the new contract. Plus, our regular workplace commentator, Stephanie Hare, explores how best to approach giving and receiving feedback so that it is actually useful.