bigbirdOne World, One Sky: Big Bird's AdventureJoin Big Bird, Elmo and Hu Hu Zhu, their friend from China, as they learn about the Big Dipper, the North Star and the Moon.One World, One Sky: Big Bird's Adventure event flyerOne World, One Sky: Big Bird's Adventure event flyerFeature ShowsEarth and Space Sciences60 MinutesPre-K to Grade 1Earth's Place in the Universe