Of course none of it is permanent. I mean, just look at how the melting glaciers (which is every one of them) are coming back. We need only wait another 1,000 to 10,000 years and voila, the glaziers are back. Take that, you silly climate change deniers.

BTW, trees less than 100 years old look nothing like an ancient forest unless you don't know the difference between relatively young forests and truly old forests. From a distance they may well look similar but up close..