GIGANTIC: BIG IDEAS 2015 – LONDON, 12 FEBRUARY. A “showcase of the biggest, boldest and most relevant ideas we’ve had the pleasure of putting in front of a Salon audience” featuring Margaret Heffernan, Lucinda Hawksley, Natalie Haynes, David Speigelhalter, Tom Chatfield, Charles Fernyhough and yours truly. At Foyles, Charing Cross Road, form 7. Full details and booking here.