Among these, we include the "bubble, " a clear spherical shield that travels with you, blocking out unwanted dirt and noise.

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After waiting for years to obtain a patent, and enduring a difficult path of expensive examination, the patent owner would have to endure still more attacks, without the shield of the clear and convincing evidence standard for protection.

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Shirkey says the reason he always thought there would never be a shield law for journalists is that the definition is not so clear thanks to the Internet.

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Without the shield of sports gear and sweat, the damage to their children becomes clear.

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Still, the shield's effectiveness as a defense in cyber-warfare is far from clear: Bruce Schneier, the founder and chief technology officer of security firm BT Counterpane, argues that no single strategy can stop determined hackers.

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When one compares Olmert's management of the current crisis with former prime minister Ariel Sharon's management of Operation Defensive Shield in April 2002, the fact that this operation is not serious becomes manifestly clear.

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