Worcester’s EcoTarium offers general admission and planetarium shows at half price in September.  This month’s Budding Scientists program (for children ages 4-6 with accompanying adult; free with museum admission) will be on September 3 (10:15AM and 11AM), exploring the sounds of nature and music.  The EcoTarium’s summer exhibit, Wild Music, will close September 6.  Cool Moves: The Artistry of Motion will open September 22.