It's the Sun, Stupid (the Reprise)

Another report is out suggesting that solar cycles determine the Earth's temperature, not man-made activity:

Solar scientists predict that, by 2020, the sun will be starting into its weakest Schwabe solar cycle of the past two centuries, likely leading to unusually cool conditions on Earth. Beginning to plan for adaptation to such a cool period, one which may continue well beyond one 11-year cycle, as did the Little Ice Age, should be a priority for governments.

A previous discussion here.