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Life's biochemical networks could have formed spontaneously on Earth

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https://www.youtube.com/watch?v=_2xly_5Ei3U

Carl Sagan's famous re-enactment of the Miller-Urey experiment of the 1950s, showing how the proteins and amino acids could have come out of the early Earth's atmosphere. But, scientists still couldn't figure out how these molecules of life could have self-assembled into a living thing.

Before getting to today's announcement of the formation of life from non-life, one should say more about the history of the scientific exploration for life's origins.

In the 1800s, scientists came up with the second law of thermodynamics. This law says that any closed system from a flow of energy and matter will degenerate to a homogeneous state of matter. This is contrary to the life we see on this planet. So, the second law of thermodynamics, tested in laboratories around the world, leaves a puzzle for how life can come from non-life(which it must have). These answers took a lot of mathematical breakthroughs in chaos theory and scientific breakthroughs in open systems.

In the 1970s, Ilya Prigogine showed theoretically, that in an open system, entropy works in the reverse - from non-structure to structures only stable by a sustained flow of energy and matter. Which is what we see with life today. Life only sustains by eating and absorbing energy and matter. If it stops eating, or taking in a flow of energy and matter, it dies, and soon decays to a homogeneous state.

Also, in the 1970s and 1980s, Stuart Kauffman showed how a sufficiently diverse set of chemical elements that makes one another can self-assemble into a complex whole. Life didn't start out evolving from simple to complex, but started out as a complex whole. Today, there has been announced an experiment confirming this.

https://phys.org/news/2019-05-life-biochemical-networks-spontaneously-earth.html


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