Darwin said that evolution needs huge amount of time, and this is the reason why his evolution couldn’t be seen by us. Differently from Darwin, modern evolutionary scientists have much more technical resources at their disposal. By means of these advanced tools they eventually could give us experimental evidence of evolution in the lab. With the modern technologies, they could even compress millions of years of evolution into a few years of lab work.
Since evolution depends on reproduction time, they can grow populations of organisms that have fast reproduction time, e.g. bacteria, fruit flies (Drosophila melanogaster), etc.. Evolution is based on random genetic mutations, then they can use chemical and physical means that increase the frequency of mutations. One of these means is radioactivity: ionizing radiations have powerful mutational effects on the biological tissues and the genomes.
[Radiation] simply produces a greater frequency of the same mutations that occur continuously and spontaneously in nature. Like cancers, the genetic effects of radiation are impossible to distinguish from mutations due to other causes. (source)
The above statement is important because it grants that the “quality”, so to speak, of the radiation mutations is the same of the natural mutations. Evolutionary scientists can be sure that what differs is only the frequency. This is what matters though, because, since random natural mutations are the driving force in evolution they can increase the power of this driving force simply by increasing the frequency of mutation by means of radiation.
An experiment of “fast evolution” in the lab can be configured as shown in the following simplified schema:
Note the feedback arrow representing the possibility of recycling n-times the process until they get some interesting evolutionary improvement in output (represented by the big black mutant “super-insect” on the right). Of course modern technologies can greatly help to robotize and automatize the entire process.
The biological effects of radioactivity have been known since 1920. Soon evolutionary scientists started with enthusiasm these kind of experiments with the sincere hope to prove evolution in the lab. Unfortunately, differently from the picture, the results of their countless experiments with irradiated fruit flies have shown no species different from flies in output. After near a century and millions of generations of fruit flies subjected to X rays causing mutations, all they have been able to produce are: fruit flies. To be precise, the flies that remain normal flies are the lucky individuals. The unlucky ones becomes anomalous, damaged flies: they develop diseases, abnormities, malformations, cancers, death. Far now, hundreds of different kinds of mutation were identified in the radiation experiments, but none of these characteristics formed a new organism.
Evolutionists try a defense by saying that “high radiation exposure is deadly”. This is not a defense, rather the clear admission that Darwinian evolution cannot work. In fact “high radiation” means “high mutation rate” and this should improve evolution by definition. If, instead of evolution, it causes damages and death then random mutations cannot be the driving force in the creation of the biological complexity. It is not only the death of billion poor fruit flies, it is the “death” of Darwinism tout court.
If neo-Darwinism is true, then “fast evolution” experiments should prove it in the lab. They don’t. The bottom line is that evolution, beyond countless conceptual reasons that refute it, is disproved also by the experimental evidence. In a sense this XX century atomic bankruptcy of Darwin’s idea can be called the “Chernobyl of evolution”.