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By Geoff Brumfiel of Nature magazine North Korea may have conducted two covert nuclear weapons tests in 2010, according to a fresh analysis of radioisotope data. The claim has drawn scepticism from some nuclear-weapons experts.

Recent media reports and ongoing protests over the reportedly abhorrent working conditions at factories where Apple's iPhones are produced have left socially conscious Americans with a dilemma: Is it ethical to own an iPhone? [More]

Recent media reports and ongoing protests over the reportedly abhorrent working conditions at factories where Apple's iPhones are produced have left socially conscious Americans with a dilemma: Is it ethical to own an iPhone? [More]

We sifted through media coverage of Facebook's imminent IPO to bring you the mother of all news roundups. Get ready to ride the linked-up lightning. Now it's Facebook's turn to share.

We sifted through media coverage of Facebook's imminent IPO to bring you the mother of all news roundups. Get ready to ride the linked-up lightning. Now it's Facebook's turn to share

How medicine, sports and society are trying to heal and protect the brains of millions amidst the growing awareness of the long-lasting effects of traumatic head injury [More]

The Righteous Mind: Why Good People Are Divided by Politics and Religion [More]

The Righteous Mind: Why Good People Are Divided by Politics and Religion [More]

Some Africans click, but English speakers don’t. That’s been the conventional wisdom about click sounds, which serve as regular consonants in Zulu and Xhosa and a few other African languages but which were presumed to just be used in English for encouraging a horse, imitating a kiss, or expressing emotions such as disapproval or amazement. But researchers have recently found that clicks are far more prevalent in the world’s lingua franca than had been thought.

Some Africans click, but English speakers don’t. That’s been the conventional wisdom about click sounds, which serve as regular consonants in Zulu and Xhosa and a few other African languages but which were presumed to just be used in English for encouraging a horse, imitating a kiss, or expressing emotions such as disapproval or amazement. But researchers have recently found that clicks are far more prevalent in the world’s lingua franca than had been thought.

By Katy Migiro NAIROBI, Feb 3 (AlertNet) - An exceptional harvest after good rains and food deliveries by aid agencies have ended famine in Somalia for now but food stocks could run out again in May, the United Nations said on Friday.

By Katy Migiro NAIROBI, Feb 3 (AlertNet) - An exceptional harvest after good rains and food deliveries by aid agencies have ended famine in Somalia for now but food stocks could run out again in May, the United Nations said on Friday. [More]

As part of Facebook's IPO filing, founder Mark Zuckerberg praised the concept of the "hackathon." Could something similar benefit your company, even if you're not in tech? Welcome to 2012 , a time in which hacking is praised in S-1 filings .

As part of Facebook's IPO filing, founder Mark Zuckerberg praised the concept of the "hackathon." Could something similar benefit your company, even if you're not in tech?

Morning After The Morning's Trash In my last post , I focused on flaws in the medical device approval process. The Union of Concerned Scientists FDA at a Crossroads meeting also covered problems with drug approval. This is perhaps no better illustrated than by the disappointing decision by Secretary of Health Kathleen Sebelius to deny the emergency contraceptive, Plan B, over-the-counter status for women under the age of 17