Stinking rich people.

Bill & Melinda Gates Foundation is a private foundation founded by Bill and Melinda Gates. It was launched in 2000 and is said to be the largest transparently operated private foundation in the world.[4] The primary aims of the foundation are, globally, to enhance healthcare and reduce extreme poverty, and in America, to expand educational opportunities and access to information technology. 

It had an endowment of US$44.3 billion as of 31 December 2014.

As of May 16, 2013, Bill Gates had donated US$28 billion to the foundation.

In 2007, its founders were ranked as the second most generous philanthropists in America, and Warren Buffett the first.