Interesting that Jennings would bring up future generations, because age and gender are excellent predictors of "climate change denial". 

Those under 50 are in large part convinced that climate change is happening, is human caused and is a deadly threat to our long term survival.  Older, conservative white males are the most common deniers, see http://thebulletin.org/climate-change-generation-gap9351

So, to change course, all we have to do is wait until the old men die off (after all, they run the government).  But by then it will certainly be too late. 

Stephen J. Remington