Sun link to global warming disproven. what lie now?

Whether it's the sun or a result in natural fluctuations of our rotation or orbit it seems obvious, from the past, that this is likely a natural cycle. There Earth has warmed and cooled innumerable time over it's history. The last cooling period ended in the late 19th century (the little ice-age), which followed a warm period in the Earth's cycle when Greenland was ice free. It should be no surprise that the Earth is warming again..........