Exploring New Concepts of Retirement Education (ENCORE) classes begin today. The schedule includes a wide range of offerings, and classes will be held from 10 a.m. to noon and 1:30 to 3:30 p.m. in various venues in Astoria and Seaside.

Learn folk dances from around the world on Monday mornings. William Warton’s novel, “Birdy,” will be discussed Tuesday mornings, while the ideas of Plato will be explored Tuesday afternoons. The Science Exchange meets Wednesday mornings to share science news and views; in the afternoon, the Viking Earls of the Orkney Islands is the topic, utilizing the “Orkneyinga Saga” as a guide.