Thanks for MOOC, Rick

To the Editor:
I am much in debt to Rick Gray for his column on the free online class (MOOC) from the University of British Columbia which explains the science of global warming. I have finished lesson one and I find it fascinating.  I expect that I am probably one of only a half dozen of your readers to accept that global warming is a real thing... But still, for what it’s worth, kudos to Rick for the great suggestion!

Chris Wiegard