In the past half a century, reincarnation has become a subject of scientific inquiry due to the availability of information that are verifiable. The physicist Doris Kuhlmann-Wilsdorf stated that “the statistical probability that reincarnation does in fact occur is so overwhelming . . . that cumulatively the evidence is not inferior to that for most if not all branches of science.”
There are four main sources of evidences (click on each for details):
These are individuals who remember their past lives, and whose detailed memories have been independently verified to be correct.
Those who exhibit body marks or characteristics that are connected with the previous life, such as scars, deformities or marks.
Those who remember and speak a language unlearned in the current life but which was known to the subject in a previous life.
Testimonies of famous people regarding their memories of a previous life.
Yes, there is overwhelming evidence that shows that there is an entity in human beings separate from the physical body. The latest ones are the near-death experience researches that show that during a period when the physical body is clinically dead, the consciousness is perceived to be floating above the body and can observe and hear the things happening around such as in the operating room. There have been so much testimony and investigation on this matter that this research field is definitely scientific. The link between reincarnation and after-death survival of the consciousness was pioneered by Dr. Ian Stevenson in his monograph entitled “The Evidence for Survival from Claimed Memories of Former Incarnations” which can be downloaded here https://med.virginia.edu/perceptual-studies/wp-content/uploads/sites/360/2016/12/STE1.pdf. He subsequently wrote ten books on his extensive researches.