Heavy clashes in Aden airport, alliance accused of cluster bomb use 3:01pm EDT

ADEN - Local fighters battling the rebel Houthi militia in Yemen's port of Aden stormed areas around the airport on Sunday in an operation supervised by the Saudi-led coalition, which also provided air support, the group's spokesman said.

Baltimore Mayor Stephanie Rawlings-Blake speaks at a news conference outside the Mondawmin Mall in Baltimore, Maryland May 3, 2015. REUTERS/Eric Thayer

Baltimore mayor lifts curfew

BALTIMORE - The mayor of Baltimore lifted a 10 p.m. to 5 a.m. curfew she had imposed on the city last week after a night of looting and arson that followed the death of a young black man from injuries suffered while in the police custody.  Full Article 

A mother and her children rescued from Boko Haram in Sambisa forest rest in the dormitory at the Malkohi camp for Internally Displaced People in Yola, Adamawa State, Nigeria, May 3, 2015. REUTERS/Afolabi Sotunde

Freed women tell of horror of Boko Haram

YOLA, Nigeria - Boko Haram fighters killed older boys and men in front of their families before taking women and children into the forest where many died of hunger and disease, freed captives said after they were brought to a government refugee camp.  Full Article 

Floyd Mayweather, Jr. of the U.S. poses with his title belts after defeating Manny Pacquiao of the Philippines in their welterweight WBO, WBC and WBA (Super) title fight in Las Vegas, Nevada, May 2, 2015.    REUTERS/Steve Marcus

Mayweather cements legacy with Pacquiao win

LAS VEGAS - Floyd Mayweather Jr. cemented his place among the pantheon of boxing greats by improving to 48-0 with a unanimous decision over Manny Pacquiao in a fight that lived up to its immense hype and price tag.  Full Article | Video 

A man uses an E-cigarette, an electronic substitute in the form of a rod, slightly longer than a normal cigarette, in this illustration picture taken in Paris, March 5, 2013. REUTERS/Christian Hartmann

As vaping rises, teens cite the allure of tricks

NEW YORK - U.S. teens' use of e-cigarettes tripled in the last year. Performing tricks is one of the top two reasons young users say they consider e-cigarettes cool.  Full Article 

This computer-generated view depicts part of Mars at the boundary between darkness and daylight, with an area including Gale Crater beginning to catch morning light, in this handout image provided by NASA. REUTERS/NASA/JPL-CALTECH/HANDOUT

Cosmic rays may damage brains of astronauts

WASHINGTON - It may not be space debris, errant asteroids, supply shortages, thruster malfunctions or even the malevolent aliens envisioned in so many Hollywood films that thwart astronauts. It may be the ubiquitous galactic cosmic rays.  Full Article 

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"Avengers: Age of Ultron" wins big at the box office

"Avengers: Age of Ultron" kicks off the summer blockbuster season with the second-highest domestic opening in history, but doesn't quite top the first film. Vanessa Johnston reports.