The value of Bitcoin had fallen sharply on the MtGox exchange in recent days One of the biggest Bitcoin Exchanges, MtGox, has gone offline, external. The exchange has been hit by technical issues and recently halted all customer withdrawals of the digital currency after it spotted what it called "unusual activity". The move is a setback for backers of Bitcoin, who have been pushing for greater ado
The chief executive of Bitcoin exchange MtGox, Mark Karpeles, has quit the board of the Bitcoin Foundation, which oversees and develops Bitcoin software. It comes shortly after MtGox halted transfers of the digital currency to external addresses after it spotted what it called "unusual activity". The halt resulted in a sharp decline in the value of Bitcoins. Last week, MtGox - one of the largest B
A US company that has developed an "electronic backpack" that fits onto a cockroach allowing its movements to be controlled by a mobile phone app has defended itself against cruelty claims. The Backyard Brains company says that the device is intended to get children to be interested in neuroscience. A spokeswoman told the BBC that the device - being formally launched on Saturday - was not a gimmic
Windows Live Messenger replicated much of the functionality of the firm's Skype division Microsoft has announced it intends to "retire" its instant message chat tool and replace it with Skype's messaging tool. The news comes 18 months after the software giant announced it was paying $8.5bn (£5.3bn) for the communications software developer.
The BBC has obtained footage from a Japanese television crew of those trapped inside the exclusion zone The governor of the region at the centre of Japan's nuclear crisis has criticised official handling of the evacuation of the area around the stricken Fukushima Daiichi power plant. Fukushima prefecture governor Yuhei Sato said: "Anxiety and anger felt by people have reached boiling point." Engin
Residents of the coastal city of Sendai are continuing the search for survivors amid the devastation Prime Minister Naoto Kan has said Japan is experiencing its greatest hardships since World War II as it tackles the aftermath of an earthquake, tsunami and a growing nuclear crisis. He said the situation at the quake-hit Fukushima nuclear plant remained grave, a day after an explosion at a reactor.
No need to reload page, content updates automatically. 0007: It's been a dramatic week - the killing of arguably the world's most wanted man and the emergence of intriguing details about where he was hiding. Questions remain of course, including concerns over Pakistan's failure to detect Bin Laden and about exactly how the US raid was planned and executed. We're going to end our live coverage now,
Police are trying to clear residents from the evacuation zone around the Fukushima plant The word "meltdown" goes to the heart of the big nuclear question - is nuclear power safe? The term is associated in the public mind with the two most notorious accidents in recent memory - Three Mile Island, in the US, in 1979, and Chernobyl, in Ukraine, seven years later. You can think of the core of a Boili
Damian Grammaticas reports on the destruction wrought by the tsunami in Sendai A powerful explosion has hit a nuclear power station in north-eastern Japan which was badly damaged in Friday's devastating earthquake and tsunami. A building housing a reactor was destroyed, but authorities said the reactor itself was intact. The government sought to play down fears of a meltdown at the Fukushima 1 pla
Nuclear Physicist Walt Patterson told the BBC's Nik Gowing that even after the plant was shutdown its core would need to be cooled Japan's prime minister has declared a "nuclear emergency" after a number of reactors shut down in the wake of a massive earthquake hitting the country. Eleven reactors at four nuclear power stations automatically shut down, but officials said one reactor's cooling syst
The quake hit at 14:46 local time (05:46 GMT) and this is how the disaster unfolded Japan's most powerful earthquake since records began has struck the north-east coast, triggering a massive tsunami. Cars, ships and buildings were swept away by a wall of water after the 8.9-magnitude tremor, which struck about 400km (250 miles) north-east of Tokyo. A state of emergency has been declared at a nucle
Dozens of schools in Japan for the country's ethnic Koreans are supported by North Korea Above the blackboard, gazing out over the classroom of students hunched over their books, are framed portraits of North Korea's Dear Leader, Kim Jong-il and his father, the country's dead but Eternal President Kim Il-sung. Beneath them the boys are dressed in dark blue blazers, the girls in traditional Korean
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