We interrupt this regularly scheduled blogcast of "new discoveries" to point out that yesterday's main segment on the NPR show "On Point" was "Nature's Invaders." The featured guest was Alan Burdick, editor of Discover Magazine and author of "Out of Eden: An Odyssey of Ecological Invasion." Alan was joined by Dr. Edwin Grosholz, a marine biologist at U.C. Davis. It was an interesting interview, nothing controversial, and in case you missed it, you can get the audio here.