Other researchers are struggling to find out what is then the master plan behind the body's gray matter.

Lunar researchers have been struggling with this mystery for years, and they may have finally found a solution.

Since that time, researchers have struggled to try to establish just what the form of representation is that is used by deaf children.

Because of its subjectivity, researchers have struggled to measure groupthink as a complete phenomenon.

However, because its material properties are different from traditional semiconductors, researchers have struggled to develop integrated circuits with graphene components.

In addition, embryonic stem cells are considered more useful for nervous system therapies, because researchers have struggled to identify and isolate from adult tissues.

Instead, researchers have struggled to devise effective noninvasive sampling methods.

He said researchers were now struggling to reproduce their earlier work.

At this point, researchers are struggling even to define sinusitis, which affects an estimated 37 million Americans, or 13 percent of the population.

If researchers are struggling to prove that intercessory prayer has benefits for health, at least one study hints that it could be harmful.