There's no denying in the 4bn+ years of Earth, the climate has changed multiple times. Is it changing drastically, today, due to human influence? That's a bigge

There's no denying in the 4bn+ years of Earth, the climate has changed multiple times. Is it changing drastically, today, due to human influence? That's a bigger claim and with good arguments on both sides. Have we forgotten the Climate controversy emails from 2009?