Storm dumps snow on Midwest, bitter cold to follow

We had weather like this back in the '50's too and I remember my dad telling about a winter in HIS youth with snow piled 30 feet deep and CO2 emissions had nothing to do with it either time.  It's a cycle the planet goes through.  Look at the sahara desert.  Did global warming cause the weather to change over the Sahara and make it a desert? If it did, it happened thousands of years ago before man was responsible for any "emissions".   Where did all that sand come from then?  Sand that deep and plentiful is formed at the bottom of the ocean.  So how did it get to the surface and become this gigantic desert?  People are in a panic about the changing climates but the earth has gone through this before.