Farmigo is making the CSA (community supported agriculture) model more sustainable and scaleable, which is no easy feat considering the challenges- high subscription turnover and lower rates of new technology adoption on the farm.

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Some smaller markets have even managed to swim against the tidal wave of global selling in the first few weeks of the year--no easy feat.

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Large portions of these trips are made on the area's winding rivers -- no easy feat when traveling with 30 to 40 containers of medical supplies.

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Cueto (10-5), Mat Latos, Bronson Arroyo, Homer Bailey and Mike Leake all have avoided the disabled list no easy feat, considering 75 big-league starters already have been sidelined this season, according to Stats LLC.

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It was no easy feat and required dealing with exceedingly complex back-end systems, as well as many handsets.

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"Getting 'buy-in' is no easy feat, " says Norton.

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Getting traction in the ultra-conservative college market is no easy feat.

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Getting into the Y Combinator is no easy feat but the rewards are access to the best start-up resources the world has to offer. 20% of the applicants get interviews and 30% of those interviewed are accepted, Frenkiel estimated.

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The Naughty Dog developers like a good technical and artistic challenge, and creating and rendering realistic-looking sand (in dunes, blowing in the wind, etc.) is no easy feat.

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