It's not really about duck-billed platypuses. I just came back from holiday to find a segment I recorded a couple of weeks ago for the Australian Broadcasting Corporation's The Science Show has gone out already. Here's a link to the piece (there's a link to the transcript there too). It's about the main theme of 13 Things: that science has to embrace the unexpected. But it focuses on the varying alpha idea, explained extremely ably here by Michael Murphy of Swinburne University. The lovely creature above is from here.