I am confused has abiogenesis been proven or not?
In February of 2011, John Horgan (a science writer for Scientific American) had an article called: Pssst! Don't tell the creationists, but scientists don't have a clue how life began. In it, he said, “Geologists, chemists, astronomers and biologists are as stumped as ever by the riddle of life.” Why are they stumped? There’s the chicken-and-egg paradox of the DNA needing proteins and proteins needing DNA. There’s the instability of RNA. There’s the chirality problem. You have to deal with hydrolysis. You have to explain the origin of the genetic code. And so on and so forth. You can find guys like Dr. George Whitesides, a prominent professor of Harvard University and an expert on chemical evolution, who will openly say that he has no idea how life could have gotten started knowing all the chemistry he knows (and you are going to be hard-pressed to find someone on the planet who knows more chemistry than he knows). Evolution News and Views website was commenting on Harry Lonsdale’s “Origin of Life Challenge” that he gave in 2012 and said, “It’s so poorly understood that one of Lonsdale’s referees, astrobiologist Chris McKay from NASA’s Ames Research Center, commented, ‘The scientific study of the origin of life is still early enough that there's not even a consensus on how to approach the problem.’ What? Didn't Darwin propose a warm little pond? Didn’t Oparin propose coacervates? Didn’t Miller propose spark discharges? Didn’t Sidney Fox propose microspheres? Didn't Gilbert propose an RNA World? . . . 150 years of work has not produced a consensus on how even to approach the problem? Shocking” (Millions to Chase a Myth). ============= "CRR's habitual lies and Questioner's aggressive ignorance" "one might be tricked into thinking" " the purely ideological fight..." That sure is easy to say. If someone has to resort to name calling, sarcasm, insults, ridicule, etc. to put down another person’s position, then what does that say about the strength of their own position?
How many generations since the origin of life?
Every single one of my direct ancestors has had children. I come from a long line of animals that have had offspring, so if heredity has anything to say about it, it's highly likely that I should have offspring, too. That's the background. Question is: How many generations of ancestors do I have? Life began on Earth around 3,8 billion years ago. At 25 years per generation, that's 152 million generations. But, surely our tree shrew ancestors 70 million years ago only lived for a year or two? Which means many more generations, right? I have done a search, but couldn't find an answer as to how many generations before all of us.
What is fermentation?
The term fermentation has been derived from latin word ‘fever’ meaning ‘to boil’ because during fermentation a lot of froth is formed due to evolution of CO2 gas and it gives the appearance of boiling.The process of fermentation was discovered by Pasteur (1860) while Leibig and Buchner related this process with enzymes. Products obtain by fermentation depend upon the nature of enzyme.Decomposition of complex organic compounds into simpler substances by enzymes present in micro- organisms is called fermentation.Examples : putrefaction of food, souring of milk or curd and formation of vinegar.