Early human agriculture cancelled natural cooling of Earth's climate, new ice core data and other evidence confirm. Earth naturally cycles between cool glacial periods and warmer interglacial periods because of variations in its orbit around the sun. We currently are in an interglacial period, called the Holocene epoch, which began nearly 12,000 years ago.
from Oceanography News -- ScienceDaily http://ift.tt/1OuNTUD
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