But the most troubling possibility involves procedures performed in the name of prevention, whose potential risks far outweigh any possible benefits.

A subtle squeeze from a lying position may sound like a pleasant way to shoot off commands, but it may also raise troubling possibilities.

Ardis reflected on this surprising and troubling possibility.

New studies continue to raise the troubling possibility that even the low levels of radiation emitted by most computer monitors have the potential to cause health problems.

Yet the troubling possibility remains that their presence has as much to do with public relations as with musical substance.

Yet the spread of computer networks also raises troubling possibilities.

Indeed, the hour and a half of argument raised a troubling new possibility: that the justices will divide in this case along liberal/conservative lines.

The country has also had to come to terms with the troubling possibility of tropical cyclones making their way into previously untouched areas such as central Russia.

A troubling possibility seemed to be forming in Mercer's mind.

But a review of the company's filings with the Securities and Exchange Commission points to other troubling possibilities for the stock's poor performance.