Hi Cristina, My students and I are excited to join you and your team tomorrow. A couple of quick questions: 1) How many cubs does a polar bear mom usually have? I know moose traditionally have two. 2) One of the researchers from France that I worked with in the Arctic said that you can tell when polar bears are hungry. He said that if they have eaten a seal recently, they have a dirty rear end. They are "safer" to encounter, because they are not desperately hungry. Is there any truth to this? 3) My guess on the last sound is not aliens, but the guy from the movie "Police Academy" that does all the imitations. Betsy Wilkening 7th graders Wilson K-8 Tucson, AZ