A stem cell is an unspecialized cell that is not terminally differentiated and has the potential to acquire a more specialized function by differentiation. Stem cells may be classified based upon their stage of differentiation or their differentiation lineage. All terminally differentiated cells had their beginning in embryonic stem cell progenitors.

The imaging sensor chips in electronic gadgets helped engineers at the California Institute of Technology  transform the way cell cultures are imaged by serving as the platform for a "smart" petri dish, named ePetri.

The precision with which preschoolers estimate quantities, prior to any formal education in mathematics, predicts their mathematics ability in elementary school, according to research from the Kennedy Krieger Institute.

Will the United States give up its leadership in science and technology?  Newer economies are surging ahead, and in the U.S. recession is further dampening any hope.  It was not long ago that Norm Augustine, former Chairman and CEO of Lockheed Martin, said Americans do not prefer science and

A new study reports that although liars can reduce facial actions when under scrutiny, they can't completely suppress them.  The lead author spent two decades studying the faces of people lying when in high-stakes situations and arrived at this conclusion, potentially valuable to security experts.

The basic temperamental patterns, such as cautious and submissive when confronting new environments or bold and assertive in unfamiliar circumstances, seen in kids are linked to opposite hormonal responses to stress.

(Science Debate.com) The previous story described the sigificance of impact factor and how it is calculated.  It is interesting to see how the impact factor of a journal can be influenced by even a few published papers.