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
A Charlie Brown Valentine A Charlie Brown Valentine A Charlie Brown Valentine is an animated television special, based on characters from the Charles M. Schulz comic strip "Peanuts". It features the "Peanuts" characters during the week leading up to Valentine's Day. Initially broadcast February 14, 2002 on ABC, "A Charlie Brown Valentine" was the first new "Peanuts" special to air on television since 1994's "You're in the Super Bowl, Charlie Brown", and the first original special to be televised since Schulz's death in February 2000. "A Charlie Brown Valentine" was the first "Peanuts" special to be produced after the death of "Peanuts" creator Charles