These stunning photos include a polar bear in a Chinese zoo, a teen in Zambia facing an uncertain future, Mongolian kids ...

There are five general senses: touch for feels, taste for food, smell for avoiding trash, hearing for sounds, and, of course, eyesight for visualizing the very waves making up that sound.

Visualizers used to be very much in vogue, something you’d gasp in at amazement when you’d fire up Winamp or Windows Media ...