White noise's ability to cut through background noise means that it's easy to locate the source, and as a result it's sometimes used as part of a siren on an emergency vehicle.

FORT STEWART, Ga. - Pink ribbons, yellow ribbons, blue ribbons, they all stand for something. Things that have drastically affected people's lives and possibly changed histories. Yet after a while ...

So, here we go again! All it took was one snap of these 'Old Skool' Vans sneakers to bring up distant memories of the blue-and-back dress. For some, it's obvious that the shoes are pink and white.