If you've got some free time, here are a couple talks for your listening pleasure. Radiolab presents a story I told about a fateful trip to Sudan on their latest podcast. I've embedded it here: // Last week, I also talked about viruses on Skeptically Speaking, and they've posted our conversation here. (If you have trouble at that link, try here.) Among other things, we talk about the unimaginably huge number of viruses on Earth, and I offer my vote for the Worst Virus Ever. Fortunately, if you're not a catepillar, you don't have anything to worry about.