Super Tuesday: Big win for Biden

Joe Biden has emerged as the biggest winner in the Super Tuesday primaries in the United States, continuing his remarkable comeback in the Democrats' race for the White House. The left- wing senator, Bernie Sanders, is on course to win four, including the largest, California.

Also on the programme, how accurate are the infection numbers in the coronavirus outbreak? And we meet one of the two winners of this years Pritzker Prize, the most prestigious architectural award in the world.

(Picture: Former Vice President Joe Biden speaks as his wife, Dr Jill Biden, looks on. Credit: Tama / Getty)