One aspect of the file that I researched was the comet that hit earth 65 million years ago. Apparently, there are multiple craters (no actual fragments of the comet) that dates back to 65 million years. The shiva crater, which is highly debated, implies that a comet of 25 miles diameter hit earth at approximately the same time. Hmmm... that's interesting. Also, the evidence for this cataclysm is not so much in the material of the comet as it is in the effects of a thermal blast, that are often times associated with comets (i.e. crystaline globule structures, and iridium deposits).
FACT:
The Hominid's transformation to Human was faster than any other recorded species. This changes has been characterized as violent genetic mutations in the brains that increased the brain mass at a rate that was unprecedented in the grand taxonomy of evolution.
We have more junk DNA (90% of total DNA) than any other species. This is strange when you consider how efficiently evolution molds life.
Many ancient cultures such as the Sumerians and Egyptians reached their pennicle at the onset of their civilization, only to regress gradually with time. This is an archeological and anthopological anomaly that is widely known in the field, but is not much talked about.
Recent decoding of Neanderthal DNA has revealed that Humans did not genetically branch ouf from the Neanderthal ancestors. There is no DNA evidence that they ever mated with Humans.
65 million years ago there was a class of dinosaurs called Troodon. This species had a brain larger than most modern birds, and was said to have the same type of brain-mass /body-mass ratio as modern birds. This is important because evolutionary psychology tells us that the single most important indicator for intelligence is brain-mass/ body-mass ratio. THat's why a parot is so smart. The Troodon had a body mass of a small human, but a brain-mass/body-mass ratio that is of a higher degree to mammals. This creature also had a partially apposable thumb. They had large eyes which indicates they are of a nocturnal nature (think caves). link:
http://en.wikipedia.org/wiki/Troodon
There are African minning sites that date as far back as 60,000 B.C.
OPINION
Social Psychological studies have demonstrated that Humans have a group oriented mentallity that is shortsighted and is oblivious to others outside their group. This tendency extends to humanity's natural arrogant self perception. Assuming the universe revolves around earth is one example. It wasn't until Corpenicus heliocentric discovery were people's knowledge no longer pervious to their natural belief of being special. Similarly people nowadays naturally take the disposition that we could be uniqure amongst billions of candidates, that we may indeed be the only intelligent life form in the universe.
Emperical observation indicates that the necessary element for life in earth is a geophysical sourse that produces energy for some type of simple bacteria form that can be used as a food source for more complex organisms, thus the beginning of an ecosystem. Life exists in all facets of earth. They exist in near boling temperatures in thermal vents. They exist is freezing temperatures such as in anctarctica. Life even prospers in places that don't have sunlight such as a caves and deep underwater environments.
If we are to choose among two assumptions: 1. We are alone 2. We are not alone. Why do we relegate the assumption that we are not alone as the most complicated of all explanations when trying to undertand a mystery?
Lacerta files spoke to me in more ways than in its entertaining value.