At this rate, the war on bioterrorism may be over before the Allegheny County Health Department can use its new, state-of-the-art, $5.6 million laboratory in Lawrenceville. ... (09/04/2008)

Honored for his inventiveness, Johnny Lee said he decides to pursue a project based on what he describes as a "work-to-wow ratio." ... (09/02/2008)

This column usually highlights astronomical events that can be viewed with the naked eye. ... (09/01/2008)

WASHINGTON -- Scientists have transformed one type of fully developed adult cell directly into another inside a living animal, a startling advance that could lead to cures for a plethora of illnesses and sidestep the political and ethical quagmires that have plagued embryonic stem-cell research. ... (08/28/2008)

Monkeys and viral decoys could be key to creating an effective avian-flu vaccine before a worldwide pandemic can strike. ... (08/27/2008)