Erica David presented some of her findings at the International Snow Science Workshop in September 2004, and again in October 2006. The conference takes place every year in Jackson Hole, Wyo. Learn more about the workshop at:
www.avalanche.org/~issw2006/ (American Avalanche Institute).
If you want to know anything and everything about snow, turn to this playfully illustrated book. Its short chapters cover dozens of snowy topics: how snow crystals develop, spring thaws, how filmmakers film snow, snow prints, avalanches, snowbirds, and more. Along with weather information, stories of snowy expeditions, and information about snow-dwelling plants and animals, the book offers wintry folktales from around the world.
density A measure of the compactness of a substance. Density is equal to the amount of mass per unit of volume. In general, density increases as pressure increases and temperature decreases.
germination The sprouting of a seed, spore, or bud. Germination usually takes place in the spring, when climate and soil are warm and moist.
volume1. The amount of space that is filled by an object. Volume is measured in cubic units, such as cubic feet or cubic meters, and includes the number of feet or meters that make up the length, the height, and the depth of an object. 2. The loudness of a sound. The higher the volume is, the louder the sound is.