Science magazine is hosting a live n online chat with Jack Horner, Stephen Brusatte, and Robert Coontz in about 40 minutes at 3:00 pm Eastern (12:00 pm Pacific). Live Chat: What Have We Learned About Dinosaurs Since Jurassic Park? http://news.sciencemag.org/sciencenow/2013/04/live-chat-what-have-we-learned-a.html