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How much wisdom (sapientia) would
humans be able to accumulate? Homo sapiens sapiens is on the point to add
another “sapiens” to its scientific title: according to a new study released
yesterday, not only that human evolution seems not to have ended, but the
process’ pace has been increasing in the past 40,000 years.
The recent study was conducted
because a team of researchers rightfully wondered how the abstract term of
“evolution” would look like in figures. The team of anthropologists studied as
well the major differences that appeared between early people and the current
Homo sapiens sapiens. Findings were astonishing, as they showed that our
species is still in a hurry to evolve.
According to this recent study,
it seems that the pace of human evolution has been increasing at an amazing
rate since our ancestors started spreading through Europe, Asia and Africa about 40,000 years ago. People evolved because
their number had also started to increase and thus, offered more opportunity
for genetic mutations to take place.
Scientists estimated that in 9000
B.C. our whole planet was populated only by five million people. Today, we are
no less than 6.5 billion and still counting. Because of this astonishing
numerical increase from the past 10,000 years, people evolved like no other
species. According to anthropologist John Hawks of the University of Wisconsin,
nowadays people are genetically more different from ancestors living 5,000
years ago than those humans were different from the Neanderthals, who had
vanished 30,000 years ago.
The team of anthropologists
examined more than 3 million variants of DNA in 269 people for this study and
identified almost 1,800 genes that have been widely adopted in recent times
because of the evolutionary benefit they brought. "We found very many
human genes undergoing selection," said anthropologist Gregory Cochran of
the University of Utah, who added also that "Most [of these human genes]
are very recent, so much so that the rate of human evolution over the past few
thousand years is far greater than it has been over the past few million
years."
Scientists believe that “the
invention” of agriculture was the turning point in humans’ evolution. About
10,000 years ago, people made the transition from living from hunting to
actively raising crops and domesticated animals. Thus, they started to set up
homes and to found cultures. And there was not turning back!
The only question that remains is
whether we are able to evolve forever…
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