If science proves some belief of Buddhism wrong, then Buddhism will have to change. In my view, science and Buddhism share a search for the truth and for understanding reality. By learning from science about aspects of reality where its understanding may be more advanced, I believe that Buddhism enriches its own worldview.
Dalai LamaMisunderstanding may arise by confusing the Buddhist and scientific definitions of death. Within the scientific system you spoke quite validly of the death of the brain and the death of heart. Different parts of the body can die separately. However, in the Buddhist system, the word death is not used in that way. You'd never speak of the death of a particular part of the body, but rather of the death of an entire person. When people say that a certain person died, we don't ask, "Well, which part died?"
Dalai LamaThere is no way to escape death, it is just like trying to escape by four great mountains touching sky. There is no escape from these four mountains of birth, old age, sickness and death.
Dalai LamaAs human beings we are all the same. We have this marvelous intelligence, which sometimes creates problems for us, but when influenced by warm-heartedness can be very constructive. In this context we need to appreciate the value of having moral principles.
Dalai LamaThe great benefit of science is that it can contribute tremendously to the alleviation of suffering at the physical level, but it is only through the cultivation of the qualities of the human heart and the transformation of our attitudes that we can begin to address and overcome our mental suffering...
Dalai Lama