Troublingly, though, the Keurig has already seemed to penetrate much of the North America market.

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Troublingly, when Scottrade asked what age a person should begin retirement savings, Gen Y respondents replied 29.

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Added to a troublingly high rate of nonsexual violent crimes (870 per 100, 000), that number makes Saginaw, Mich.

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For a console that had developed a troublingly thin release schedule just months into its lifespan, this is a breath of fresh air.

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More troublingly for Apple, the attack also highlights a growing number of attacks on Mac computers, which are widely thought of as safer from software viruses than Windows-based PCs.

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For all the familiar signs of British economic frailty that are now making headlines, such as demand driven by consumption rather than investment, the biggest long-term worry is a different one: whether productivity growth, troublingly weak in the past few years, can revive.

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