Lichen in Wales 'could hold key to new antibiotics'
An expert says fungi and lichens found on trees in Wales could be the key to new forms of life-saving antibiotics.
Botanist Ray Woods said more research is needed to unlock their potential, amid warnings that routine operations could become deadly within 20 years if the ability to fight infection is lost.
Mr Woods wants screening of lichen in Wales saying their antibiotic priorities could be an "amazing resource".
Cemlyn Davies reports.