He says that, when researchers changed the magnetic field, the butterflies were no longer able to find their way.

VOA: special.2010.04.27

"They've made their point and the devices are no longer relevant, " she said, adding that Samsung has since changed its smartphones and tablets so they no longer infringe Apple's patents.

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Last year, however, the British government agreed with 15 other commonwealth countries that males should no longer be given priority and changed the rules of succession so that the first-born child of either gender could one day take the throne.

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While this formula hasn't changed, it no longer makes a difference for the majority of states.

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