article_snippet: the roster of the very rich who are giving away wealth.
article_snippet: philanthropy of the world's richest people.
article_snippet: Billionaire financier Warren Buffett is encouraging the very .
article_snippet: wealthy to give away at least half their worth in their .
article_snippet: causes quietly and is trying to develop a more 'systematic . approach' to philanthropy that goes beyond writing checks.
highlights_snippet: Other wealthy businessmen donating part of Other wealthy businessmen fortune to charity include Warren Buffet, Bill Gates and Mark Zuckerberg .