When hasn't the climate been changing? The more I read about geology and tectonics, the more I read about the correlation with climate changes. Many of those climate changes correlate with changes in ocean currents as old oceans close and new oceans open.
It's amazing how little "science" underpins Global Climate Change. It's myopically centered around chemistry, specifically gases such as methane, carbon-dioxide, and sulfur-dioxide. There other scientific disciplines which have applications towards climate sciences, such as geology (plate tectonics, volcanism), astronomy (solar cycles, earth's orbit, earth's tilt, asteroids, meteors, comets), physics (gravity), and others I may not be aware of.
IMHO ... it is the scientific myopathy of Global Climate Change theory that leads me to suspect it is more political philosophy than earth science.
Why are Al Gore and John Kerry, white males of privilege with a larger carbon footprints, promoting an agenda that wants to eliminate the fertilizers that feed billions of people? It's an insanity that is a contagion among unelected rich, powerful people who like to think of themselves as thought leaders.
IMHO ... Global Climate Change is putrid group think.