I am open to the fact that the world may be warming. I would expect that spaceship earth experiences many climate trends defined by a global cooling or a global warming. Further, I’m sure that this has been the case since the dawn of earth’s existence. We’ve seen ice ages and tropical conditions shape the globe for ages.
I’m sure that it’s possible the globe is warming over time.
However, it doesn’t seem to have been warming in the recent time measured by science:
According to the RSS satellite data, whose value for April 2014 is just in, the global warming trend in the 17 years 9 months since August 1996 is zero. The 212 months without global warming represents more than half the 423-month satellite data record, which began in January 1979. No one now in high school has lived through global warming.
It’s becoming increasingly difficult too convince skeptics that man is significantly contributing to the changing climate.