Back by popular demand! Learn about ecosystems and make your own terrarium in this free program, open to adults, teens, and kids 10 and older accompanied by an adult. Register online, at the Park Entrance Reference Desk, or by calling the library at 518-792-6508 x247. This program is part of our Explore Earth series. Be sure to visit the hands-on traveling exhibit, Explore Earth: Our Changing Planet on the 2nd floor of the Library.