Paleozoic Walk. Participants will be introduced to the rock layers on the Indian Ladder Trail, and the fossils found within them. We will descend through the entrance to the Indian Ladder Trail to observe the various Devonian layers. 9:30 a.m. at John Boyd Thacher State Park

BioBlitz. Join guest experts and park educators to explore the park and help us identify as many different species as possible in one day! Like an extreme nature scavenger hunt, a BioBlitz is a great way to get excited about science and learn about biodiversity. 10 a.m. at Emma Treadwell Thacher Nature Center

Yoga Class at CH. Good for what ails you! Intelligent exercise, breathing, and relaxation. Open to all. Call Sarah Nelson Weiss at 518-817-8720 for information or to confirm a given date. $12 per class. 9 to 10:15 a.m.. at Conkling Hall 8 Methodist Hill Rd Rensselaerville, 12147

Sound Medicine in Berne. A vibrantly magical Shamanic Sound Healing experience including world music invocations, and healing sound meditations, Cost $30 Registered and paid in advance. $32 cash at the door. 1 p.m. at Raven Crest Botanicals 842 Canaday Hill Road Berne, 12023

Kachina and Spirit Doll Workshop. Come learn how to make spirit dolls with Educator, international contemporary artist, and indigenous storyteller Jason Medicine Eagle Martinez. 11 a.m. to 4 p.m. at Albany Center Gallery 488 Broadway Suite #107 Albany, 12207

The Stockade. Walk its storied streets, meet local characters, and learn its legends and lore with us this year. Tickets available at schenectadyhistorical.org/tickets. Cost $35. 10 a.m. to 1 p.m. at. Museum & Library 32 Washington Avenue Schenectady, 12305

History Webinar. Baker’s List: How One Patent Examiner Used History to Fight Racism - NYS Library Webinar.Historian Adam Bisno of the U.S. Patent & Trademark Office discusses the work of Henry E. Baker. Register at https://nyslibrary.libcal.com/event/8625272. 12 p.m. via virtual

(Libraries, Meet up & Education)

Drink The Seasons: Madeira. Join us for an evening of Madeira and we’ll make a sample variety of historic libations made with seasonal ingredients. cost $30. Must be ages 21 and above. Registration is required at https://tinyurl.com/Drink-The-Seasons-Madeira.   6 to 8 p.m. at Schenectady County Historical Society 32 Washington Ave, Schenectady, 12305,

Campfire Stories. Join us around the Nature Center campfire for a children's story hour as we learn about water with Berne Public Library. Call 518-872-0800. 3:30 p.m. 87 Nature Center Way, Voorheesville 12186. 

History Webinar. Occupied America: British Military Rule and the Experience of Revolution - Webinar. The New York State Library is pleased to host this online book talk featuring Dr. Donald F. Johnson. Register at https://nyslibrary.libcal.com/event/8688276.12 p.m. via virtual