The latest Tangled Bank (a blog carnival all about science) is up ((So, welcome anyone who arrived from there.)) with a couple of posts of potential interest to agriculture. Walking the Berkshires describes how to rationally decide how invasive a weed might be. And if you’re interested in pests and diseases, Discovering Biology in a Digital World will tell you more than you ever wanted to know about the screwworm, one of my personal all-time favourites.