This use of mercury raises worker safety and environmental emissions issues.

But use of fetal tissue will also raise major ethical issues.

Yet the subjective use of memory does raise issues about authenticity.

It expands the use of tests to raise student achievement.

For all the practical good that has come out of these studies, the use of market research raises important issues.

The production and use of fossil fuels raise environmental concerns.

The growing use of test data to help students prepare raises concerns among some educators.

However, his use of the words "right now" raised concerns that war might be the ultimate objective.

But the use of "shaped" charges could raise the threat considerably, military officials said.

The use of private security groups like the Muslims, he said, raises questions.