Melting Icebergs...

This week and next, we are conducting an investigation and hypothesizing about what would happen if the polar ice caps melted.  I have seen many movies regarding this debatable event, and I think that it would be safe to assume that the sea level would rise.  This is not what really concerns me, though.  I love the Planet Earth series from Discovery channel and one that stays on my mind is the episode about the poles.  In it, the polar bear has a difficult time finding food for several reasons.  One of which, is the lack of solid ice for him to walk on, or seals to rest on.  The polar bear ends up swimming for two days and finally, exhausted and starving, finds a herd of walruses.  He attacks, only to be stabbed in the leg by a tusk.  The polar bear ends up dying as a result.  This stays on my mind because the narrator points out that with the ice sheet that was FORMALLY there, this struggle to find food would have not happened, the polar bear would have survived.  So, although rising ocean levels is of concern, there are also other ramifications from global warming that most of us probably have not thought of.  The fictitious movies of Hollywood have us envisioning a flooded New York with Lady Liberty floating by, while there are very real, well documented ramifications that are happening right now as I type this.  Definitely something worth thinking about...before it is too late.