Tax records indicate that in 2008 the three main Koch family foundations gave money to thirty-four political and policy organizations, three of which they founded, and several of which they direct.

NEWYORKER: Covert Operations

While they perhaps lack recognizable names, the community foundations, with their local roots and knowledge, will help you identify worthy local charities. (You can find one serving your community here.) Although the superrich tend to set up their own private foundations, Hurwitz says that the New York Community Trust counts three billionaires among its donors.

FORBES: How To Give Like Gates, Buffett & Peterson

Buffett, 82, donated to three foundations run by his children, the Howard G.

FORBES: The Americans Who Gave Away the Most Money in 2012

Some of the biggest foundations base their grant-giving on a three-year average of their assets.

ECONOMIST: Philanthropy

In 2007, following 40 years of digging, archaeologist Ehud Netzer unearthed the foundations of an elaborate mausoleum, and then the fragments of three sarcophagi.

WSJ: Shards of a Reputation | Herod the Great | Israel Museum | By Amotz Asa-El

Wooden buildings with two or three storeys today must have through-pillars connecting the roof firmly to the foundations.

ECONOMIST: AN ENGINEERING MYSTERY