Here is an article about a possible cure for cancer, which already exists in the form of an inexpensive chemical, which makes it difficult because no one will put up the money to get by FDA approval.  Here is an excerpt, you can link to the article here.

By Bill Walker:
The good news this month is that a Canadian team under Dr. Michelakis at the University of Ottawa has discovered that a simple, inexpensive chemical is a ...   more »