EU court rules against UK data retention laws

The European Court of Justice ruled Wednesday that governments must not indiscriminately collect and retain people's emails and electronic communications, dealing a blow to Britain's contentious new cyber-surveillance law.

Superfast fluorescence sets new speed record

Researchers have developed an ultrafast light-emitting device that can flip on and off 90 billion times a second and could form the basis of optical computing.

Researchers detect how light excites electrons in metal

Researchers have observed, in metals for the first time, transient excitons – the primary response of free electrons to light. Here, the researchers discovered that the surface electrons of silver crystals can maintain ...

How secretaries of state handle classified information

Former Secretary of State Hillary Rodham Clinton says she never sent classified information through her private email account while she served as America's top diplomat, a claim that has been met with skepticism.

Novel high-power microwave generator

High-power microwaves are frequently used in civil applications, such as radar and communication systems, heating and current drive of plasmas in fusion devices, and acceleration in high-energy linear colliders. They can ...

Judge sides with government in lawsuit over surveillance

A federal judge on Tuesday sided with the government in a lawsuit alleging the National Security Agency is illegally engaging in the bulk collection of Internet and telephone records in the hunt for potential terrorists.

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