Changes

'''Climate cycles''' are natural trends in which temperatures fluctuate on large time-scales, ranging from minor fluctuations over a few centuries to massive shifts in climate over several tens of thousands of years.

'''Climate cycles''' are natural trends in which temperatures fluctuate on large time-scales, ranging from minor fluctuations over a few centuries to massive shifts in climate over thousands of years.

Using proxy data from various natural sources (including deuterium content in ice cores, calcium content and thickness of sea shells and tree ring growth data) we can establish that these cycles do exist, and that they occur for several reasons, perhaps the most prominent of which is the Milkanovitch cycle.

Using proxy data from various natural sources (including deuterium content in ice cores, calcium content and thickness of sea shells and tree ring growth data) we can establish that these cycles do exist, and that they occur for several reasons, perhaps the most prominent of which is the Milkanovitch cycle.