Book excerpt: Islands at the Edge of Time is the story of one man's captivating journey along America's barrier islands from Boca Chica, Texas, to the Outer Banks of North Carolina. Weaving in and out along the coastlines of Texas, Louisiana, Mississippi, Alabama, South Carolina, and North Carolina, poet and naturalist Gunnar Hansen perceives barrier islands not as sand but as expressions in time of the processes that make them. Along the way he treats the reader to absorbing accounts of those who call these islands home -- their lives often lived in isolation and at the extreme edges of existence -- and examines how the culture and history of these people are shaped by the physical character of their surroundings.