If anyone is interested, I've had a stab at sorting out the dinosaur-bird stuff for a non-specialist audience. You'll find it at www.abc.net.au/science I'ld appreciate any feedback. Cheers, Paul Dr Paul M.A. Willis Consulting Vertebrate Palaeontologist Quinkana Pty Ltd pwillis@ozemail.com.au If smoking kills, how come it cures salmon?