Mycobacterium abscessus has managed to become a global threat to those with cystic fibrosis  and other lung diseases. File photograph: Getty Images

A multi-drug resistant infection is spreading around the world among cystic fibrosis patients. It is not known how the life-threatening infection ha(...)

Illustration: Getty Images

There will always be some children who colour their skies purple, tree trunks red and hair green. Colour deficiency is not rare. It affects one in (...)