Erich von Däniken is also famous for similar "research".
I start to think more and more that those things he finds are not from aliens but from former failed civilizations... Which all failed für the same /similar reason line us (climate change, atom bombs etc) just millions of years back not just a few thousend... Like a cycle which continues until either we survive and we don't kill us self or the sun burns out... Very weird thought, no? :)
I don’t think it’s a weird thought, but earlier humans wouldn’t have been able to cause climate change as we understand it today or destroy themselves with nuclear weapons because the evidence would be readily available in the geographic record. I am a fan of the line of reasoning from people such as Hancock because I think he’s scratching on the surface of lost human history, but I think it’s something we have to look at scientifically and skeptically (in general). I find the work he’s discussed with the pacific north west in the United States to be particularly interesting.
Having read Graham Hancock, he's at least a historical anthropologist with simple questions of the sort "what if the pyramids are much older than commonly accepted?".
For a suitable interpretation of the word 'research', yes, I suppose you could say he does.
I did not intend my comparison to be a compliment!