AP - Groundbreaking research suggests genes help explain why some people can recover from a traumatic event while others suffer post-traumatic stress disorder. Though preliminary, the study provides insight into a condition expected to strike increasing numbers of military veterans returning from combat in Iraq and Afghanistan, one health expert said.

AP - The lack of offers to Barry Bonds will be examined by the baseball players' association as part of its annual review of the free-agent market. Less than two weeks before opening day, the 43-year-old home run king remains unsigned.

Reuters - China warned of a "life and death" struggle with the Dalai Lama on Wednesday, as it sought to end a wave of protests in its Tibetan regions with arrests and tightened political control.

Reuters - U.S. Democratic presidential candidate Barack Obama on Tuesday criticized his preacher's racially charged sermons but said he could not disown him in a speech urging Americans to move past their "racial stalemate."

AFP - The Chinese authorities said 105 "rioters" involved in protests in the Tibetan capital of Lhasa had surrendered, the official Xinhua news agency reported on Wednesday.

Reuters - Pioneering science fiction writer and visionary Arthur C. Clarke, best known for his work on the movie "2001: A Space Odyssey," has died in his adopted home of Sri Lanka at the age of 90.

Reuters - The Federal Reserve slashed U.S. interest rates on Tuesday, boosting Wall Street, which was already higher on stronger-than-expected investment bank earnings.

Reuters - The new governor of New York admitted to past extramarital affairs and one by his wife on Tuesday, seeking to quash even more wild rumors and move past the tumult caused by his predecessor's resignation amid a sex scandal.

Reuters - The U.S. capital's strict gun control law faced a barrage of skeptical questions on Tuesday from the U.S. Supreme Court's conservatives.

Reuters - U.S. Treasury Secretary Henry Paulson on Tuesday described the economy as being in "sharp decline," the closest he has come yet to conceding an election-year recession has set in.

AP - Sean "Diddy" Combs has denied a report by the Los Angeles Times that his associates were responsible for the 1994 robbery and shooting of Tupac Shakur at a New York recording studio, and that he knew about the attack in advance.

AP - North Carolina was the only school among the four No. 1 seeds in the NCAA men's tournament to graduate at least 50 percent of its players. A report released Monday found 86 percent of Tar Heels men's players earned diplomas during a six-year period. The other top seeds were far worse: 45 percent at Kansas and 40 percent at UCLA and Memphis.

AP - China vowed to defend its sovereignty in Tibet, and a deadline issued for protesters involved in violent anti-government riots to turn themselves in or face severe punishment passed without any apparent surrenders or arrests Tuesday.

AP - Gov. David Paterson, who took over the state's top job Monday after Eliot Spitzer resigned amid a prostitution scandal, has admitted he and his wife Michelle had affairs during a rough patch in their marriage several years ago, a newspaper reported.

AP - Democrat Barack Obama on Monday promised Iraq and Afghanistan war veterans help with their grievances — save one. "I know it drives you nuts. But I'm not going to lower the drinking age," the presidential candidate said.

Reuters - A deadline for Tibetan rioters to hand themselves in passed on Tuesday, but attention switched to China's premier, who was due to address the media after days of violence marring the run-up to Beijing's Olympic Games.

AP - Researchers say they have shown for the first time that humpback whale calves make sounds. The nonprofit Cetos Research Organization, which studied humpbacks off Maui and Kauai, say the grunts and squeals emitted by the young whales are messages for their mothers.

AP - The man at the center of a ricin scare at a Las Vegas motel says he never had any intention of hurting anyone with the deadly biological agent, his brother told The Associated Press.

AP - Former President Clinton on Monday called the notion that he unfairly criticized his wife's rival, Barack Obama, "a total myth and a mugging." Clinton had compared Obama's landslide victory in South Carolina's Jan. 26 primary to Jesse Jackson's wins in the state in 1984 and 1988.

AP - Facing strong opposition, Florida Democrats on Monday abandoned plans to hold a do-over presidential primary with a mail-in vote and threw the delegate dispute into the lap of the national party.

Reuters - Florida's Democratic Party said on Monday it would no longer push for a rerun of the state's invalid primary election to pick a presidential nominee, leaving a decision on what to do with the state's delegates entirely to the national party.

Reuters - A spreading economic malaise seeped into U.S. factories in February and March as waning demand more than offset the export benefits of a cheaper dollar, a series of reports showed on Monday.

AFP - China faced mounting global pressure over Tibet on Monday amid exiles' claims that hundreds of people may have died in a crackdown on protesters, even though Beijing denied using deadly force.

Reuters - Russia and the United States expressed optimism on Monday they could improve ties, and Pentagon chief Robert Gates said a deal might be reached on a U.S. missile shield before the end of the Bush administration.

Reuters - A fire sale of Bear Stearns Cos Inc stunned Wall Street and pummeled global financial stocks on the eve of an expected U.S. interest rate cut aimed at preventing a meltdown of the financial system.

Reuters - The Dow industrials ended slightly higher, but the S&P 500 and the Nasdaq fell on Monday after JPMorgan Chase & Co's deal to buy struggling brokerage Bear Stearns at a rock bottom price failed to dispel fears of deeper fallout from the escalating credit crisis.

Reuters - New York Gov. David Paterson was sworn in on Monday following the sex scandal that forced predecessor Eliot Spitzer to resign, and he confronted a state budget shortfall worsened by a faltering U.S. economy.

AFP - A bomb blast near a Shiite shrine in the central Iraq city of Karbala killed at least 43 people on Monday, the city's police chief said.

Reuters - U.S. Vice President Dick Cheney on Monday declared the 2003 U.S.-led invasion of Iraq a "successful endeavor" in a visit to Iraq that was overshadowed by a suicide bombing that killed at least 25 people.

Reuters - Tibetan protesters who committed serious crimes will be dealt with harshly but those who show remorse can expect leniency, Tibet's governor said on Monday ahead of a midnight deadline for rioters to hand themselves in.

AP - The Federal Reserve, in an extraordinarily rare weekend move, took bold action Sunday evening to provide cash to financially squeezed Wall Street investment houses, a fresh effort to prevent a spreading credit crisis from sinking the U.S. economy.

AP - Just four days after Bear Stearns Chief Executive Alan Schwartz assured Wall Street that his company was not in trouble, he was forced on Sunday to sell the investment bank to competitor JPMorgan Chase for a bargain-basement price of $2 a share, or $236.2 million.

Reuters - The U.S. Federal Reserve on Sunday announced fresh emergency measures to stem a fast-spreading global financial crisis, using tools it has not used since the Great Depression.