Paying it forward

Just out for an early morning walk on the beach and saw some pelicans diving, I assume for their breakfast.  It would seem and ordinary enough occurrence.  In the context of climate change however, I wonder how normal it will be for our descendants.  Just the ability to move two thousand miles south in a matter of hours to enjoy a tropical climate while our own homes are covered in snow is perhaps an evanescent event in the scheme of human evolution.  With 7 billion of us crowded on an over stressed planet, how long can we use up resources to go on beach holidays?   I hope our species ingenuity is up to the challenge.  I surely hope my grandchildren can watch their children's children romp on a sunny beach in March.