GENEVA (AP) — Four world powers are dispatching their top diplomats to Geneva on Friday to add their weight to negotiations aimed at putting initial limits on Iran's ability to make atomic weapons.

NEW YORK (AP) — Artificial trans fats were as American as apple pie when New York City's health-conscious mayor, Michael Bloomberg, pushed to ban them from restaurant food in his city in 2006.

Super Typhoon Haiyan — which is one of the strongest storms in world history based on maximum windspeed — is about to plow through the Central Philippines, producing a potentially deadly storm surge and dumping heavy rainfall that could cause widespread flooding. The densely populated city of Manila, home to 12 million, is in the storm’s path, although it is predicted to escape the worst of the winds and storm surge.

WASHINGTON (AP) — The Senate approved legislation outlawing workplace discrimination against gay, bisexual and transgender Americans, demonstrating the nation's quickly evolving attitude toward gay rights nearly two decades after Congress rejected same-sex marriage.

LAUSANNE, Switzerland (AP) — Palestinian leader Yasser Arafat ingested lethal radioactive polonium before his death nine years ago and had high levels of it in his body that could not have been accidental, Swiss scientists confirmed Thursday.

NEW YORK (AP) — If Twitter's bankers and executives were hoping for a surge on the day of the stock's public debut, they got it. The stock opened at $45.10 a share on its first day of trading, 73 percent above its initial offering price.

CAMP LEJEUNE, N.C. (AP) — Anna Schnatzmeyer's face is taut with concentration as she slowly maneuvers the Riverine assault boat away from the dock, using the complex controls to try and inch the 34-foot craft straight back without sliding sideways.