Clouds with extremely cool water are mixed with man-made ice crystals, such as silver iodide and metaldehyde crystals.

VOA: special.2011.01.11

An E. coli O157:H7 outbreak that began at a fair in New York state in late August has laid low more than 1, 000 people, most of them because they drank contaminated water that was mixed with drinks or made into ice.

ECONOMIST: Food poisoning

It should never be mixed, and only served neat or maybe with one ice-cube.

FORBES: The Myth of the Top Shelf: Thinking Outside the bottle

As land repeatedly surfaced and receded, the remains of marine creatures got mixed up with those of terrestrials, forming one big Ice Age graveyard: sea cows, prehistoric sharks, spike-tailed armadillos the size of refrigerators.

NEWYORKER: Bones of Contention