For the first time ever, the largest donation on record in a single year in the U.S. has been made by donors under the age of 30. According to the Chronicle of Philanthropy, Mark Zuckerberg and his wife Priscilla Chan gave more than $970 million worth of Facebook stock to The Silicon Valley Community Foundation, an organization that serves the needs of two counties in northern California and awards grants to community programs in countries around the world. The Zuckerberg’s gift was nearly double the amount of the year’s second largest of $500 million to the Oregon Health & Science University Foundation for cancer research, made by Nike founder Phil Knight and his wife Penelope …