A Renaissance Christmas and Greta Thunberg's ice float – the week in art

The V&A vrooms into view, Tutankhamun is unearthed and Bridget Riley brings the bombast – all in your weekly dispatchJan de Beer’s Renaissance Altarpieces
There’s nothing more seasonal than a nicely painted nativity and this Flemish artist painted some very fine ones indeed.
• Barber Institute, Birmingham, until 19 January. Continue reading...