From MSNBC:
Science has the power to harness energy, allow human flight, help cure the sick, and explain much about the world. But as amazing and beneficial as science is, it cannot explain everything. Scientists may never know exactly how the universe began, or help to settle matters of faith. The same is true for the paranormal world. Though science can explain many strange phenomena, some mysteries remain to be solved — often because there is simply not enough information to reach a definitive conclusion. Some of these phenomena may one day be fully understood, as many things that were once mysterious or unexplained (such as the causes of disease) are now common knowledge.
Medical science is only beginning to understand the ways in which the mind influences the body. The placebo effect, for example, demonstrates that people can at times cause a relief in medical symptoms or suffering by believing the cures to be effective — whether they actually are or not. Using processes only poorly understood, the body’s ability to heal itself is far more amazing than anything modern medicine could create.
More here.