The scientists pinpointed one form or allele of the gene, called Trp, as the cause of sciatica.

One issue, raised by Dr. Weinberg, is that scientists cannot pinpoint the level of carbon dioxide emissions that alters the climate.

Offering insight into how evolution progresses inside a gene, scientists have pinpointed mutations in an ancient protein that transformed its shape and function more than 400 million years ago.

Watching the Brain Think A new technique allows scientists to pinpoint the site at which human brain cells are energized for tasks like thinking.

The finding, published today in the journal Nature, is expected to help scientists pinpoint the genetic machinery that makes anthrax so deadly and devise therapies against it.

When rare mutations do occur, they are unique to a single man and his male descendants, and scientists can often pinpoint when and where this founding father lived.

But by tracking the course of mammalian evolution, scientists can pinpoint when a common ancestor existed and what, in general terms, it was like.

Studies comparing such children to those with normal brain development may help scientists to pinpoint when and where mental disorders begin and perhaps how to slow or stop them from progressing.

From laboratory studies in petri dishes and animals, scientists have pinpointed many active chemicals in plants that may account for their apparent cancer-fighting properties.

Using photoacoustic tomography (PAT) scientists can pinpoint the part of the brain involved in epileptic seizures.