Seattle's Burke Museum is sponsoring its third annual Environmental Writers Workshop on Saturday, April  23, from 9 a.m. to 5 p.m. Award-winning authors and journalists Carol Kaesuk Yoon (Naming Nature) and Bruce Barcott (The Last Flight of the Scarlet Macaw) will join me in leading both class-based and field-based sessions in this all-day workshop.  Enrollment is open to 40. We'll divide into