Penicillin nontoxic in humans by first performing toxicity tests in animals and then on humans. His subsequent experiments on penicillin's response to heat and pH allowed Fleming to increase the stability of the compound. The one test that modern scientists would find missing from his work was the test of penicillin on an infected animal, the results of which would likely have sparked great interest in penicillin and sped its development by almost a decade. The importance of his work has been recognized by the placement of an International Historic Chemical Landmark at the Alexander Fleming Laboratory Museum in London on
Valentine Phantom Valentine Phantom The Valentine Phantom, often referred to as the Valentine Bandit in media reports, refers to an unidentified individual or group who each Valentine's Day secretly decorate the downtown area of a city in the United States with a series of red hearts printed on sheets of letter-sized paper. The reports began in Portland, Maine in 1985, and the perpetrators remain unknown. Speculation about the individual or group which decorates before dawn each February 14 is popular in conversation, and local media, and over the past ten years has emerged as an example of vernacular culture. The earliest known