Sixty-five million years ago, the Chicxulub astroid hit the earth and was  responsible for the demise of the dinosaurs and the rise of mammals. Although the cataclysmic fires and sunamis played a major role in the extinction process, it is also likely that the large amount of debris deposited into the atmosphere would have resulted in a marked reduction in the penetration of UVB radiation to the point of it being nonexistent. Thus, if dinosaurs depended on sunlight for their vitamin D requirement, this would have been a major catastrophe and could have also been another cause for the extinction. It was the nocturnal mammal that did not require vitamin D to maintain its calcium metabolism that evolved from this catastrophic event (5,6,9).

The striking analogy between cancer and tuberculosis was noticed long before the tubercle bacillus was discovered. In 1877, Sir John Simon clearly pointed out this analogy and in fact argued very strongly in favor of a microbial origin of cancer. But by 1910, certain American medical powers did an 180 degree rotation, deciding that cancer was not caused by a microbe and that anyone who thought otherwise was a heretic, a charlatan or a quack.
 
But Virginia Livingston was none of these. Rather she was a symbol of painstaking research and dedication at the height of post World War II American medical technology. Opponents of Livingston said that she saw "contaminants" of a group of commonly encountered germs. But Florence Siebert, an expert on contaminants who standardized the present day tuberculin skin test for the US government, saw no contaminants present and Dean Burk, then Head of Cell Chemistry at the NCI went so far to say that Livingston's cancer germ was as real and certain as anything known about cancer [29]. Yet in the subsequent suppression of Livingston and her many colleagues by the medical establishment a picture emerges, and it is
not a very pleasant one.

Virginia Livingston gained international status when she discovered that her cancer germ produced human growth hormone, long associated with malignancy. However, at first even this was not believed. Had she gained the same stature regarding identifying the cancer germ itself, by today there probably would be no cancer. At this time there is admittedly no cure for Livingston's cancer germ. Suppression led to its own disinterest in cure and each year a multitude must suffer and die as a result.