A new species of dinosaur, an ankylosaur, that lived 112 million years ago during the early Cretaceous of central Montana has been described by paleontologists writing in the Canadian Journal of Earth Sciences and the Bulletin of the Buffalo Society of Natural Sciences.

Ankylosaurs are the biological version of an army tank; they were protected by a plate-like armor with two sets of sharp spikes on each side of the head, and a skull so thick that even 'raptors' such as Deinonychus could leave barely more than a scratch.
"Climate forcing due to aerosol changes is a wild card," concluded James Hansen, Makiko Sato, Reto Ruedy, Andrew Lacis, and Valdar Oinas in Global warming in the twenty-first century: An alternative scenario. "Current trends, even the sign of the effect, are uncertain. Unless climate forcings by all aerosols are precisely monitored, it will be difficult to define optimum policies."*