Its survival so far has come at a heavy cost, and challenges still loom.

After all, campus unrest has left scars, and vast challenges loom, from the environment to rural discontent.

The challenge of integrating the two airlines looms large.

Political challenges loom on the international and domestic policy fronts in the coming months, years and decades.

This year, a new challenge looms - a water shortage.

The challenges are looming in one of the busiest months for charter school organizers, who need to finish recruiting students by early spring.

Major challenges still loom for the oil industry, Iraqi and occupying officials said, especially as the Americans turn over control.

But it was a short-lived lead, for more challenges loomed ahead.

Looming even larger are the challenges of dealing with the airline's complex fare structure and its big pension debt.

But now a new challenge is looming.