Thanatology is the scientific study of death and the losses brought about as a result.
Biologists have tried to answer ‘what is life’ and ‘what is death’ but so far no exact scientific answers have been formulated or accepted. Now if I am not wrong, there are actually hundreds of definitions to what death is, but none is fully acceptable or satisfying to everyone, and this remains a controversial topic.
The case with ‘what is life’ is even more weak. Again, scientists have not been able to come up with a scientific definition. Answering these questions is an ongoing effort, but so far, no concrete answers are available in biological science.