Harvard University is receiving the biggest gift in its history — $350 million to the School of Public Health to help fight global health threats, university officials plan to announce Monday. The donation comes from the Morningside Foundation, the family charity of Hong Kong billionaire Gerald Chan. It will substantially bolster the endowment of one of the university's lesser-funded schools. "Let us hope this will be a signal to the world about how important public health is," Harvard University president Drew Faust said in an interview. The public health field in general "has been underresourced," she said, as evidenced by the world's slow response to the Ebola outbreak, which has become a scourge in western Africa.