Weekend Edition

Today, Americans take bananas for granted. They're cheap, they're ripe, they're everywhere. But take a moment and consider: How did a pale, fragile tropical fruit become so commonplace in America? Immigrants arriving at the South Ferry terminal, where the Ellis Island ferry landed, were once handed bananas and told, "Welcome to America."

In just a few weeks, the world will descend on London for the Olympic Games.

But the world goes to London every day, according to Boris Johnson, the former journalist who has just been re-elected mayor of London. In his new book, Johnson says people don't just visit the city, they've made their lives there for centuries now. It's a city, Johnson writes, where national soccer teams from all over the world can show up and count on crowds of thousands of fans to support them.

The scandal over leaked documents that has been engulfing the Vatican is the biggest breach of confidence and security at the Holy See in recent memory.

Known as Vatileaks, the crisis has shed light on a Vatican gripped by intrigue and power struggles like a Renaissance court.

Vatileaks erupted into a full-blown scandal with the publication two weeks ago of a book of Vatican documents alleging corruption and conspiracies among cardinals.

New information about computer viruses shows how countries may be lining up to fight a cyberwar. The New York Times reported that former President George W. Bush and President Obama both authorized computer attacks against Iran, culminating in the Stuxnet virus, which targeted Iranian nuclear facilities.

Meanwhile, a United Nations agency raised alarms about another virus, dubbed "Flame," which may also have been designed for use against Iran.