For 20 years, Rotary Clubs have remained determined to do whatever is necessary to achieve a world free of the crippling disease polio. Recognizing this commitment – as well as Rotary's important role as a spearheading partner in the Global Polio Eradication initiative – the Bill and Melinda Gates Foundation recently awarded Rotary a $250 million challenge grant, which Rotary will match with an additional $100 million.