Geologist Nick Zentner takes us on an entertaining road trip to explore the "ginkgo" lava flow that erupted in central Washington and flowed all the way to the Oregon Coast 16 million years ago; Exploring the surprising natural oasis in the most urban watershed in Oregon with the folks of the Columbia River Slough Watershed Council and a dedicated volunteer helping to clean it up; Photographer Brandon Swanson showcases the loveliness of the North Umpqua River during a rainstorm.