The challenge is, the more people that are working overnight, the more support services you need.
Listen to The Documentary: Egypt's Challenge on Tuesday 21 May on the BBC World Service.
After all, proving the death or injury of one person is enough of a challenge.
But respecting the election result, no matter what it is, remains the biggest challenge of all.
South Africa's youth presents a formidable challenge to people who want to entice them.
It was an estimable challenge, as starving locals killed animals in large numbers for their meat.
Mr Obama prevailed despite lingering dissatisfaction with the economy and a hard-fought challenge by Mr Romney.
BBC: President Barack Obama defeats Romney to win re-election
Now Ziese is facing the challenge that he is the right man for the job.
Cezanne's death created a vacuum and challenge: Who would or could pick up the great man's gauntlet?
And I've been telling Washington and the Americans that this is the defining challenge of our time.
And Elliott believes there is still plenty of time for the club to mount a promotion challenge.
BBC: Elliott is confident the club can turn around their season
The challenge of transforming the powder into an aerosol cloud was handed to rocket scientist Carlos Schuler.
The challenge was daunting: The electronics and entertainment giant was struggling with red ink and management paralysis.
The challenge for investors is deciding which asset classes to use in a portfolio.
To deal with the challenge, automakers are dreaming up all kinds of high-tech solutions.
The medic said a lack of sleep proved his biggest challenge on the trip.
He ran 31 miles at each location, and completed the challenge in five-and-a-half days.
We're offering the school to the community if the community wishes to take on the challenge.
At least whoever picks up the challenge needn't worry about the Afghans' blowing the thing up.
Biggest challenge is getting the economy growing as rapidly as it needs to grow.
WHITEHOUSE: President Obama��s Town Hall in Cannon Falls, Minnesota
But the company has taken on a big challenge and still has work to do.
Nuance equally might just push out a standalone product to challenge Google Now and Siri.
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So after due consideration, I took the challenge and moved to Kuala Lumpur with my family.
But Lanza sees his work as more than a challenge, or a call to arms.
Sharif's return could post a major challenge to Musharraf's somewhat shaky hold on power.
To deliver a different experience, we must challenge the usual assumptions we make about education.
FORBES: How to Bring Quality Online Education to a Global Student Population
Rask, playing this deep in the postseason for the first time, proved equal to the challenge.
Throughout our history, Americans have risen to the challenge of defending our country and our liberty.
Another big challenge for Western multinationals is that their Chinese rivals are catching up fast.
We have to mentally and physically prepare for our next race, our next challenge.
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