The Guardian Hay festival site is bathed in sunshine, and for once even the spectre of climate change isn't enough to dampen the spirits: in the second of our Haycasts, Nicholas Stern explains why he refuses to be pessimistic about the planet's future. Fresh from the success of the film of The Last King of Scotland, meanwhile, Giles Foden talks to Claire Armitstead about his new novel, Turbulence, which offers a more literary take on the weather.
Next up, Jay Rayner takes us on a tour of the festival's food halls as he attempts to buy lunch on a credit crunch budget, and finally, Ed Miliband reveals the book that changed his life and Sarah Waters admits her guilty reading pleasures.
