Young philanthropists go high-tech to reach lofty giving goals

At 29, Michael J. Greene of Chicago is a young philanthropist in the making, though he hardly fits the stereotype. He doesn’t drive a Porsche; in fact, he just sold his VW Passat with 90,000 miles and uses public transit to get around. Nor does Greene have a huge bankroll to back his pet project, a new website called WorldPennyJar dedicated to disaster relief, health, education and the environment.