By Willow oak
Well, how would you go about discounting "millions (billions, actually) or years?"

I agree and believe that we are in a warming period. It is probably, equally true that this warming period is being adversely affected by mankind; however, no amount of heeding of the facts will change the immutable fact that the earth will eventually lose all of its heat, its molten inner core will eventually cool down, and sometime in the far distant future will become a solid, frozen rock, totally devoid of life.
There is no doubt the earths core is cooling and in a million or so years will be a solid frozen chunk. I'm not really going to worry about this event. i am concerned about the warming that is happening right now that is thawing mountain tops, melting Glaciers, and changing ocean currents. This will bring about an early end to life as we know it. Until we change how we treat our environment this trend will continue to accelerate. I have seen major changes in my lifetime, I am 69 years old not .69 million years old. We can try to justify what is happening with a lot of technobabble, the fact remains the problem is here now and it is real.