The Michigan case highlights the new legal challenges, and potential for abuse, posed by the growing popularity of electronic communications.

The agreement gave the government the means to defeat the challenge posed to its authority by those on the political left.

The federal investigators have always acknowledged the uniqueness of the damage done, and the challenges posed for the buildings.

The challenge posed in the 1980s was to harmonize prosperity with ecology.

These challenges pose a new worry for Democrats who already fear that they may lose control of Congress in next month's elections.

This dissertation examined the challenge posed for higher education by the presence of non-traditional students.

Yet the Western challenge has posed problems that no other invader has equaled.

The challenge posed to physicalism by the knowledge argument runs as follows:

New technology made possible by the wonderful science of biology poses a real challenge of how to do that.

And the challenge to the poorer regions posed, in the field of the single currency, an extremely powerful challenge.