Occasional

Occasionalism is a philosophical doctrine about causation which says that created substances cannot be efficient causes of events.

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Occasional 'Cheat' Meals Could Affect The Way Your Brain Functions

The privacy of mobile apps has been extensively studied, but much less attention has been paid to the privacy of the mobile OS itself. While occasional communication with OS servers is to be expected, the observed data transmission goes well beyond this and raises a number of privacy concerns.

Largest-ever study of artificial insemination in sharks -- and the occasional 'virgin birth'

Largest-Ever Effort to Artificially Inseminate Sharks – And the Occasional “Virgin Birth”

Largest-ever study of artificial insemination in sharks--and the occasional 'virgin birth'