The Theory of Evolution by Natural Selection by Charles Darwin is a powerful theory to explain how life evolves. But, many critics said that you have to be a detective to verify or falsify the theory.
The detective works by observing evidence left at the crime scene. The detective can not directly observe the act when the crime happens. Evolution scientists have the same difficulties. Darwin himself and his successors collected many relicts aged centuries or even thousands of years ago to verify or falsify their conclusion.
But, this research proves another way. We can observe evolution by natural selection quickly.
What makes these research great? The researchers are extremely creative. They carefully chose their experimental objects to prove their theories.