The US military's Don't Ask, Don't Tell policy is officially gone as of today. Israel says it is ending a bilateral police cooperation program with Turkey as relations between the two countries continues to sour. President Obama's proposal to save the Postal Service includes ending Saturday delivery and raising the price of stamps. US officials say they are probing eight offshore banks for possible tax evasion, with grand jury investigations underway. Researchers are finding ways to detect single molecules out of trillions with new optical technology based on hyrdophobic substances.