A man accused of the shooting murder of South Australian police officer Jason Doig has been found mentally incompetent by the state's Supreme Court.

Three local councils in South Australia have been passing motions questioning vaccines, but health experts say they are based on misinformation and heighten community risk.

A large battery project in South Australia sells for nearly $500 million as investment in renewable energy surges.

Lucy Savage has to drive 450 kilometres multiple times a month to access specialised care — a reality for many women living with endometriosis and chronic gynaecological conditions around the country.

Dry but cool conditions in South Australia's south east are causing ladybirds to gather in huge numbers, which an ecologist says will help control a destructive plant pest.

The controversial law of sacrilege — which carries the same maximum penalty of life in jail as murder — still exists in South Australia, but some say it shouldn't.

Do you know where the timber in your local hardware store comes from? The Coalition says Australians should have that information.

Research tracking released bilbies and bettongs in remote SA has found feral cats are their biggest killer.