'Underwater kite' aims to turn energy tide

London, England (CNN) -- A new type of tidal turbine which its creators describe as an "underwater kite" has taken a step closer to becoming commercially available.

"Deep Green," developed by Swedish start-up Minesto, has just secured €2 million ($2.5 million) from investors to fund testing scheduled to start in 2011.
The technology comprises of a turbine attached to a wing and rudder which is tethered to the ocean floor by 100 meters of cable.

Anchoring "Deep Green" and steering the tethered "kite" enables the turbine to capture energy from the tidal currents at ten times the speed of the actual stream velocity, say Minesto.

When operational, the turbine is expected to generate 500 kilowatts of power.



Continue reading the story by Matthew Knight for CNN

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Cyberattacks hit U.S. and South Korean Web sites

SEOUL, South Korea--Cyberattacks that have crippled the Web sites of several major American and South Korean government agencies since the July 4th holiday weekend appear to have been launched by a hostile group or government, South Korea's main government spy agency said on Wednesday.

Although the National Intelligence Service did not identify whom they believed responsible, the South Korean news agency Yonhap reported that the spy agency had implicated North Korea or pro-North Korea groups.

A spokesman at the intelligence agency said it could not confirm the Yonhap report, which said that the spy agency briefed lawmakers about their suspicions on Wednesday. The opposition Democratic Party accused the spy agency of spreading unsubstantiated rumors to whip up support for a new antiterrorism bill that would give it more power.

Read the full story in The New York Times by Choe Sang-Hun.