Conspiracy Theories Versus Reality

I was talking with a friend of mine recently and out of the blue she made the claim that all over the world scientists are being killed in order to ensure their discoveries are kept secret. She cited a story she’d heard first from a homeless paranoiac and later from a wealthy socialite on a yacht: a scientist in the USA had discovered a cure for cancer but was killed because Big Pharma doesn’t want cancer cured. Big Pharma…