How do dinosaur encephalization quotients compare with those of modern birds? Obviously some birds are quite intelligent and I wonder whether some dinosaurs were brighter than generally assumed.

When I teach about comparative respiratory systems in a college intro bio class, I mention that dinosaurs probably had avian-type lungs. Is this a certain thing or should I be a bit more hedging in my lecture? Did all dinosaurs have avian-type lungs or was it just the theropods?

Ever since I went to the local performance of RadioLab Apocalyptical, I've been curious about what the scientific community thinks about the hypothesis that the K-T extinction event could have taken place (i.e., from start to finish) over a matter of hours, rather than being more of a slow process that wasn't over…