You mean this old thing?

http://dailycaller.com/2015/03/11/study-earths-orbit-causes-global-warming-today-and-climate-change-1-4-billion-years-ago/

I know I've mentioned this before, and we can go 'round and 'round again if you like, but . . . 

http://www.dailygalaxy.com/my_weblog/2011/03/when-was-earths-human-population-18500.html

. . . if a planet warms inn the galaxy and there's no humans around to suffer from it, who the fee-fie-foe-frickin' cares?

And then YOU say, "Nor were there any humans to cause it" and then I say "Sil, ever hear of a tipping point" and then you say . . . 

Go ahead, Sil - you're on.