You are wrong about there being no evidence, 11800-12000 years ago it is proven a comet impact ended not only the iceage/lesser dryas but again 70-75000 years ago this entire planets hominid species especially home sapien's when the super volcano TOBA erupted, both events have geological data across the board as proof to happening. No offense but I went there Sir and I can back it up with scientific proof oops you said do not go there. I think all humans would do better to stay up to date on the newest of things. The impact event that ended the last ice age and ALL mega fauna on the planet with a nice rise in oceans by 300-400 feet with continent wide wild fires happened. FLOODS, fire and oceans rising 300-400 feet did the damages.not blitzkrieg of human hunters wiped all the mega fauna out, this was put forth as a truth December of last year, TOBA is ancient news my friend. If you would like me to provide legit resources to the material I would be more than happy to help you out, it is really fascinating and rewrites all we thought we knew which is seeming more and more to be that we do not know our past and cannot know it, if 10k years passes even our cities will enter the fossil records along with all evidence we even were here with such fancy toys but not fancy enough to save us for the one and only threat anyone on the planet should even have a concern about, celestial impact... It happens over and over and over, each time setting all life on this rock back or tossing us right into darkness and caves once more. ALL nukes on this earth would not move a 5 mile wide rock 1 foot if detonated all at once, and we lack things stronger, so you should pay attention, I am not a half wit trying to spell check here, there is LOTS of evidence for these eruptions and impacts, and we are due for a small to large scale one in the next 4500 years if the geological record is to be trusted meaning 2000 foot to 6 miles, yet no one is worried it would take 10-15 years devoting all resources to stop it if tomorrow we found it coming..... open eyes, open ears, open minds or we humans will be fossils that tell no tales and offer up no proof of our works of engineering and technology, found they will say ancient primal beings with not much intelligence beyond basic survival skills hunters is all they have no technology they are more animal than human pffffttt apes..... they would just like we do, a bone much like a picture tells us 1 thing 1 second in time, yet we are none the wiser on this path to more denial.... those among academia who are not of the older generation cannot wait to boot these fools out and fix the records they still think we are having "Bone Wars" look up paleontology and bone wars if you do not know what I mean, that is modern academia when evidence comes forth that crushes the theory all accepted, it matters a lot.... it is not to late to say we are wrong . But many people stand in the way of change and until they die we are stuck with truths that disprove previous notions 100% with facts and those who will not let go of the theories and embrace the facts. We are not the best, culture has risen and fell many times, the cycles of nature on this world is this truth. BEFORE you lash me remember I offered proof that shows truth only for my 2 claims, I do not expect you to wake up fully to all of our situations in one day, we are sitting ducks and are doing nothing to fix that issue. But even if we do not, it has happened before and we rerose from the darkness except now we have the wisdom to stop it from ever happening to this world again and do not care......