Bill Gates away half of its value, as detailed in "The Power of Half". Gates and his wife invited Joan Salwen to Seattle to speak about what the family had done, and on December 9, 2010, Bill and Melinda Gates, and investor Warren Buffett signed a commitment they called the "Giving Pledge." The pledge is a commitment by all three to donate at least half of their wealth over the course of time to charity. Gates has also provided personal donations to educational institutions. In 1999, Gates donated $20 million to the Massachusetts Institute of Technology (MIT) for the construction of a
USS Thomas S. Gates this time "putting to good use skills developed in February in the Caribbean Sea…" "Thomas S. Gates" then visited Hurghada, Egypt (20–23 October 1990), after which time she served as "Gate Guard" in the Gulf of Suez, screening all shipping traffic. TG 150.5 became TF-60 on 26 October, and on the 27th transited the Suez Canal. Between 28 October and 11 December, "Thomas S. Gates" operated in the central and eastern Mediterranean, evolutions punctuated by port visits to Naples (31 October-2 November), Izmir, Turkey (7–13 November), and Haifa, Israel (16–17 November), and an IMAV alongside destroyer tender at Souda Bay,