Attracting Butterflies, Whale Hunting and Aspen Trees

An aspen grove of 47,000 trees in Utah holds the record as the world's largest living organism, the environmental impact of whaling., and how to attract butterflies to your yard.

137-010-01
This beautiful grove of aspen trees is considered a single living unit, attached by the roots.
PHOTO: PAT AND TOM LEESON/PHOTO RESEARCHERS INC.