‘Connected Worlds’

Human choices and actions have an impact on the world’s ecosystems, but people usually can’t see the effects as they happen. That isn’t true in this new permanent exhibition in the renovated Great Hall of the New York Hall of Science. Consisting of huge screens (one is 38 feet tall), the show, opening on Saturday, depicts six interconnected environments with a shared water supply. With the help of technology that responds to gestures, “Connected Worlds” allows children to plant, harvest, cut trees, create clouds and make other changes in the projected landscapes, and see how the native flora and fauna fare.