an astrophysicist and a geoscientist at the Solar,
Stellar and Planetary Sciences Division of the Harvard-Smithsonian Center for Astrophysics.
"[T]here's increasingly strong evidence that previous research conclusions, including those of the United Nations and the United States government concerning 20th century warming, may have been biased by underestimation of natural climate variations. The bottom line is that if these variations are indeed proven true, then, yes, natural climate fluctuations could be a dominant factor in the recent warming.