I do not believe we can ever adequately control natural climate swings. (newclimatemodel.com)
Models have long suggested that Earth's orbit shifts from circular to elliptical and back again over hundreds of thousands of years, which plays a part in natural climate swings. (newatlas.com)
Because of the climate record is still short, more work needs to be done to determine how much of the warming results from natural climate swings and how much from the warming effects of carbon dioxide released by the burning of fossil fuels, Dr. Steig said. (realclimate.org)