Laser diagnoses bacterial infection in record time

The United Nations has warned that the increase in drug resistant disease could cost millions of lives in the next few decades.

Researchers at St Andrews University have created a laser that can identify the bacteria present in an infection, in minutes instead of hours.

The team hope that faster diagnosis will mean more targeted use of prescription drugs and a reduction in antibiotic resistance.

BBC Scotland's science correspondent Kenneth Macdonald has been to take a closer look.