The chemical origin of life on earth | Marcel Eleveld | TEDxAlkmaar

[glennrobinson]

747s don't reproduce with variation, gaining complexity through natural selection.
Molecules like amino acids, membranes and nucleobases can self-assemble. Nucleobases can stack and combine with phosphate chains to form nucleotides, which can stack into ling chains of nucleic acids like RNA. RNA can fold into ribosomes, which can copy the RNA as well as translate certain sequences into proteins, utilizing available amino acids.
No magic is needed, just millions of replicating components polymerizing and growing increasingly complex with each replication.

[GsPeter]

This guy seems so charitable and honest. It's very refreshing to see that in a scientist

[francissantos]

Thank you sir. For me, it's a different angle on how it may have happened. Your explanation for your approach is easy to understand. I am looking forward to your presentation. Cheers

[ohanami]

Very nice introduction to the origin of Life. I really liked the comparison with a scrapyard.

[lrvogt]

Jeremy England is looking into a related idea—which I'll over-simplify— that if you have a lot of molecules in a bath, repeated jostling by various energy sources increases the number of possibilities for new combinations and shapes to form. These can have new properties and behaviors until some molecules begin attaching to more molecules and begin assembling their own new forms. Some of these tend to repeat more easily and newer more complex forms begin evolving.

[simoncss]

I’d very much liked to have Marcel later reveal to everyone that his sister’s cat is actually alive some random years ago, but no longer. Maybe flashing a slide with a pet tombstone on it.

[baraskparas]

A new book published by Austin Macauley Publishers titled From Chemistry to Life on Earth outlines abiogenesis in great detail with a solution to the evolution of the genetic code and the ribosome as well as the cell in general using 290 references, 50 illustrations and several information tables with a proposed molecular natural selection formula with a worked example for ATP. Cheap as an e book.

[maxwelldillon]

Interesting, would've liked some more technical detail though. I think the closing message to "appreciate life because it's rare" was a bit trite as well.

[shellbackable]

Curious to know what Dr. James Tour thinks of this presentation.

[schmetterling]

The most fundamental question for mankind is still the same that it always was: What's for lunch? If you can't answer that question daily with certainty, then you will soon not be asking any more questions at all. ;-)

[markfoster]

Seems like you confirm what is already known...life doesn't come from a junkyard.

[lycaonpictus]

Very simple explanation to the origin of life .

Its amazing how life emerged from simple chemical reaction to eventually evolving .
Nature is

[pauljasmine]

The key statement in this presentation was "I don't know". Listen to James Tour.

[TheRealBoroNut]

To take your lego as an example, evolution does not require that lego pieces be randomly assembled into a full size replica of the Eiffel Tower, it only requires that one of more final pieces be added to an almost nearly complete Eiffel Tower. The fact that it was for all intents and purposes indistiguishable from a complete Eiffel Tower is what the theory of evolution would predict.
In fact, if I had trillions of trillions of scrapyards full of Boeing parts (and only Boeing parts), that are positively attracted to each other, which will only asssemble in a strict order (ie wings only attach to fuselages, sick bags to backs of chairs etc) under action of a continuous whirlwind, blowing for billions of years, as is the case for chemicals acting in accordance with the laws of physics in spacetime, then why would I be surprised to find myself tripping over nothing but complete Boeings? Especially when the Boeings are endowed with the abilty and urge to make multiple copies of themselves from all the Boeing parts that are freely available all around themselves?
Oh and the egg came first, obviously.

[headleyspringer]

This presentation did nothing to persuade me to believe in abiogenesis. He spent half the time rambling about how to define life. He then showed how RNA could polymerize in a controlled laboratory setting. He concluded by saying that life was VERY improbable...

[dogbark]

I learned that I still don't see, at all, how nonlife became life . If anyone thinks that they now understand, please let me know . ( without entering Babble On of course )

[TonyTigerTonyTiger]

If you know ANYTHING about biology, you can skip all the way up to 9:07. The beginning will be a waste of your time. And if you know ANYTHING about the origin of life, the entire video will be a waste.

[rejectevolution]

"We know its possible because we are here today"

You sure about that bro?

[LuckyInCards]

Did life originate on Earth only once?
Could there have been more than one LUCA? More than one tree of life?
If life could have originated more than once, must it necessarily have been DNA/RNA based? Could there have been another means of heredity and evolution? Why aren't there new trees of life "originating" now?

[askaasjager]

Leuke presentatie Marcel Eleveld. erg leerzaam.