US spy master Keith Alexander on Friday courted hackers at an infamous Def Con gathering rife with software tricksters wary of police and ferociously protective of privacy.
Medals are up for grabs in cycling and swimming on Saturday after a spectacular opening ceremony to the London Olympics was watched by more than one billion TV viewers.
Thousands of people demonstrating against alleged pollution from a paper factory in east China clashed with police Saturday, the latest in a series of environmental protests.
In February, five women walked silently into Moscow's Church of Christ the Saviour before clambering over railings, pulling on balaclavas and yelling out a protest song against Vladimir Putin.
Small but significant breakthrough studies on people who have been able to overcome or control HIV were presented Thursday at a major world conference on ways to stem the three-decade-old disease.
A billion people across the globe turned on their TVs to watch the opening ceremony of the London Olympics live Friday, but very few of them were in US.
CNN Worldwide president Jim Walton announced Friday he is quitting the job at the end of the year, saying the struggling cable network needs "new thinking."
Hired assassins are stalking witnesses to a Philippine massacre in which a political warlord allegedly led the slaughter of 57 people, victims' relatives and a rights group said almost two years into a complex trial.
The US military raid that killed Osama bin Laden was the "easiest" of three steps that led to the Al-Qaeda chief's death, the special forces commander who supervised the clandestine mission has said.
The drought in America's breadbasket is intensifying at an unprecedented rate, experts warned Thursday, driving concern food prices could soar if crops in the world's key producer are decimated.
Rebel forces were bracing Friday for a decisive "mother of all" battles in Aleppo, as Washington warned the Syrian army could be preparing to carry out a massacre in the country's second city.
A US police federation chief called for tougher checks on gun buyers Thursday, almost a week after a shooter used four weapons, including an assault rifle, to kill 12 people at a cinema in Colorado.
Michael Jackson's mother Katherine returned to her grandchildren Thursday after a family battle led a US judge to transfer the guardianship of the late singer's three children to his nephew TJ.
South Korea's Samsung Electronics Friday posted a record net profit of 5.19 trillion won ($4.53 billion) in the second quarter, powered by strong smartphone sales despite the global downturn.
Less than three months after starting his historic third term as Kremlin chief, President Vladimir Putin has imposed a new clampdown on civil society that is sending Russia to an uncertain future.
When Elaine Pearce left Sydney for the seaside peace of Old Bar 12 years ago she was assured her new house was a solid investment, with a century's worth of frontage to guard against erosion.