There is no global warming period . the Earth is getting colder. look up solar cycle 24, and 25
funny the Sun does affect climate.C02 never could affect climate. these socialists created the global warming hoax to destroy capitalism , grow government and enslave us . and you think that there probably is some man made global warming ? you are brainwashed by the media
The fact that CO2 and CH4 trap heat is not an invention of a "socialist" or "the media," it was first recognized by a 19th century British chemist named John Tyndall and has been supported by controlled studies since then, such as comparing oxygen 16/18 relative abundance (a good indicator of evaporation and therefore average temperature) in Antarctic ice cores to C02 levels. What was Tyndall's "socialist agenda" in making this discovery? It has nothing to do with politics and everything to do with physics and chemistry.
People who make statements such as "CO2 cannot cause climate change" sound as ignorant as the extremists on the other side who say that our CO2 emissions will lead to doomsday, and they make convenient targets for Gore and his hysterics because they make global warming critics seem even more ignorant and irrational.
Those who want a truly objective and scientifically informed treatment that deflates the claims of both the-end-is-nigh crowd and those who deny basic chemistry and physics, take a look at Climate of Extremes by Michaels and Balling. Both are climatologists, Michaels is now employed by the libertarian Cato institute. In other words, they have far more credibility on this subject than a lot of the loud-mouths on both sides of the debate.