Associated Press

MOORE, Okla. (AP) -- A monstrous tornado at least a half-mile wide roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. At least 51 people were killed, including at least 20 children, and officials said the death toll was expected to rise....

DETROIT (AP) -- The young Detroit Red Wings have made the mighty Chicago Blackhawks look vulnerable, beating them two straight times to gain an advantage in their last playoff matchup as Western Conference rivals....

A list of the 10 deadliest tornadoes in the United States since 1900:...

TULSA, Okla. (AP) -- Deadly tornadoes that have raked communities in Middle America over the past week, including Monday's massive twister that carved a path of destruction through the Oklahoma City suburb of Moore, belie what had been a relatively quiet start of the 2013 tornado season....

NEW YORK (AP) -- Monday's powerful tornado in suburban Oklahoma City loosely followed the path of a killer twister that slammed the region in May 1999....

Your daily look at late-breaking news, upcoming events and the stories that will be talked about Tuesday:...

SAN FRANCISCO (AP) -- After falling woefully out of fashion, Yahoo wants to be cool again while catering to the capitalistic demands of its shareholders. That goal led CEO Marissa Mayer to make a $1.1 billion bet on online blogging forum Tumblr in a risky acquisition that revolves around the vision and instincts of a 26-year-old entrepreneur who dropped out of high school to pursue his dream of bringing more beauty and creativity to the Internet....

NEW YORK (AP) -- As a teenager, Tumblr CEO David Karp would canvass the streets of New York City's Upper West Side, offering to build websites for local businesses. After his freshman year of high school, the precocious, computer-savvy kid decided to drop out altogether to devote more time to his passion for technology....

MINEOLA, N.Y. (AP) -- As a grieving family prepared for the funeral of a Hofstra University junior killed by a police officer's bullet during a standoff with an armed intruder, some on Monday questioned whether police should have waited for help, including a hostage negotiating team....

WASHINGTON (AP) -- In a long-awaited White House visit, President Barack Obama on Monday told Myanmar's president that he appreciates the Asian leader's efforts to lead the country in "a long and sometimes difficult, but ultimately correct, path to follow" toward democracy....

BAGHDAD (AP) -- Here is a look at the deadliest attacks in Iraq since the withdrawal of U.S. troops on Dec. 18, 2011:...

BIGGSVILLE, Ill. (AP) -- Clark Kelly plans to spend a lot of time on the links this spring. The Illinois farmer is plowing the Hend-Co-Hills Golf Course near tiny Biggsville into a cornfield....

ISLAMABAD (AP) -- Pakistan's presumptive prime minister called for peace talks with Taliban militants at war with the government Monday, potentially charting a course that could put him at odds with the country's powerful army....

JERUSALEM (AP) -- A new Israeli report into the death of a Palestinian boy during a fierce gunbattle in the Gaza Strip more than a dozen years ago has reignited an emotional debate over who killed him - and how the incident has shaped perspectives of the Mideast conflict....

JOHANNESBURG (AP) -- Nelson Mandela, old and frail, lives in seclusion in his Johannesburg home. Beyond the high walls of the house, the fighting over his image and what he stood for has already begun....

BRIDGEPORT, Conn. (AP) -- Connecticut commuters endured slow trips to work Monday following last week's train collision that injured 72 people and disrupted rail service into New York City....

ZEPHYRHILLS, Fla. (AP) -- It could be an anxious wait of up to two months for people in a small Florida city to find out who won the highest Powerball jackpot in history: an estimated $590.5 million....

WASHINGTON (AP) -- New government figures underscore the staggering long-term consequences of military sexual assaults: More than 85,000 veterans were treated last year for injuries or illness linked to the abuse, and 4,000 sought disability benefits....

SOCHI, Russia (AP) -- The mountains of Sochi are now home to Potanin's slope, Gazprom's gondola lift and Sberbank's ski jump. The nicknames used by locals and an army of construction workers leave no doubt about who is paying for the 2014 Winter Games: Russia's business powerhouses....

LONDON (AP) -- More than a decade ago, British parents refused to give measles shots to at least a million children because of now discredited research that linked the vaccine to autism. Now, health officials are scrambling to catch up and stop a growing epidemic of the contagious disease....