A better hypothesis for what?If you actually wanted to look at things scientifically, the question is which theory produces the most reliable results. Considering you and the rest of the (pro-science) crew refuse to suggest a better (hypothesis)....
The Earth's climate has been changing for the past 4.5-billion years. And there is no evidence that anything unusual or unprecedented has occurred in recent times.
Furthermore, the predictions of how man-made emissions would supposedly create unusual changes in temperature have been consistently and spectacularly wrong.
(Oh, and I fixed your quote for you.)