Transport Canada concluded driver error caused unintended acceleration problems with the Audi 5000.

It is now increasingly recognized that the low-fat campaign has been based on little scientific evidence and may have caused unintended health consequences.

Only one attack, in March 2011, which hit a pick-up trucks carrying explosives, is accepted as having caused unintended casualties: four civilians died.

A programming error at Goldman Sachs caused unintended stock-option orders to flood American exchanges yesterday morning, roiling markets and shaking confidence in electronic trading infrastructure.