Current ultraviolet light laser treatments can kill micro-organisms - but cannot be used in humans as they would also damage cells in the body.

BBC: Cell infected with HIV

Systems based on machine learning filter out noise in big data or high resolution models by scanning for patterns that humans would like to find but cannot.

FORBES: The Man-Machine Framework: How to Build Machine-Learning Applications the Right Way

At least some can, for example, recognise themselves in a mirror a trick that humans, great apes and elephants can manage, but most other species cannot.

ECONOMIST: A declaration of the rights of cetaceans