It appears that in early 2007, researchers at the University of Alberta found that a compound called dichloroacetate, or DCA, kills cancer cells while leaving healthy cells alone. DCA is common, inexpensive, non-toxic, and available at chemistry stores. CTV covered this story in January 2007.

The catch is that DCA isn't patented, so drug companies can't make any money off it. And this makes them reluctant to invest in research, leaving it to universities and private labs. I'm not much for the conspiracy theory, but it is interesting to ask why this hasn't gotten more media play.
(Via Health Salon)