For the first time, modern brain imaging techniques are allowing researchers to see – and treat – people suffering from Post-Traumatic Stress Disorder, or PTSD.

A new birth control vaccine, using genetically engineered organisms, targets common kangaroos; but some scientists fear it could affect endangered species.

Archaeologists are using computers to rebuild ancient Roman theatres based on their ruins, allowing them to better understand their role in Roman culture.

Physicists develop technology that can detect parcel bombs made from any explosive by scanning for minute traces of nitrogen.

Mothers at risk of premature birth are often given a stress hormone that matures an infant's lungs. But studies in sheep suggest it may damage the foetal brain.