Live special edition of Diffusion! Julie-Anne Popple reports on DNA half-life with expert comments from Dr Simon Ho from the University of Sydney, and on singing mice.

Arwen Cross, Oliver Featherstone, Therese Chen and Julie-Anne Popple discuss the Ignobel awards for 2012.

We re-play our favourite "In the name of science" interview for 2012, with Dave McElroy talking about seastar sex and global warming.

Ian Woolf interviews Mark Pesce about devices that talk with you.

Presented and produced by Julie-Anne Popple with technical assistance from Miles Martignoni.