bystander

Scientists have long debated whether water in these confined regions simply behaves as a passive bystander or affects how molecules interact.

Brendan Moylan, a member of parliament for Northern Tablelands, the region where Walcha is located, thanked emergency responders and other bystanders for their "swift and incredibly professional work at the scene".

It made me realise that bystanders can feel incredibly conflicted about taking action.

Police and bystanders rescued the group, but one woman suffered a heart attack and could not be revived.

"The rich ones always forget their roots," one bystander remarks.