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Saturday, September 28, 2013

The Twilight Zone

Life on Earth began (how?) more than 3 billion years ago.
But, why new life (forms) were not formed 6 seconds, 3 months, 500 years etc later?

In order for life to have gotten started, there must have been a genetic molecule; something like DNA or RNA, capable of passing along blueprints for making proteins.
Not even a single protein inside the cell can form spontaneously and by chance, let alone entire genes.

The RNA World hypothesis got a big boost in 2009.

The study of human evolution has always been messy, and everyday findings just make it all the messier.

the 48 chromosomes in apes gradually declined to 46; so human beings were the result.

Lower Paleolithic
(c. 3.3 Ma – 300 ka)
Oldowan (2.6–1.7 Ma)
Riwat (1.9–0.045 Ma)
Madrasian Culture (1.5 Ma)
Soanian (0.5–0.13 Ma)
Acheulean (1.8–0.1 Ma)
Clactonian (0.3–0.2 Ma)
Middle Paleolithic
(300–45 ka)
Mousterian (150–40 ka)
Micoquien (130–70 ka) The human remains in China can be bracketed to 116–106 ka. (Cai 2016)
Aterian (82 ka)

Indeed, all found fossils are of complete humans, animals and plants, not works in progress "under construction".

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