When there's big news, Twitter has a way to measure. They call it tweets per second or TPS for short. When Osama bin Laden was killed, Twitter hit 5,000 TPS. At the end of the U.S.-Japan Women's World Cup Final, the service clocked above 7,000 TPS. After Beyonce announced she was pregnant, Twitter ramped up to 8,868 TPS.
Great tennis legends used to use heavy wooden rackets. Graphite arrived about 25 years ago. Since then, the technology hasn't change much. That is until now. More and more pros are using polyester strings in their rackets.
Steve Inskeep talks to David Wessel of "The Wall Street Journal," about President Obama's choice of Alan Krueger as chairman of the White House Council of Economic Advisors, and the president's jobs plan.
Now that Moammar Gadhafi's regime has lost control of the Libyan capital Tripoli, some Africans have been left vulnerable to attack. Many rebels believe any dark man from sub-Saharan Africa is a Gadhafi mercenary. The Africans say they are in Libya either as laborers or waiting to get to Italy. The International Organization for Migration says their plight is a significant problem.