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The science behind this toy, including a discussion of how electric circuits work, and how an unbalanced load (an off-center weight on your jitterbug) results in rotational vibration. Aeolian Landscape is an exhibit in which a miniature wind-swept desert landscape is recreated by an electric fan and finely ground sand that mimics the process of wind picking up and depositing small particles. Visitors can change the direction of the fan, influencing the shape of the dunes. At the Balancing Ball exhibit, a plastic beach ball floats mysteriously several feet above a large plastic cone. Upon closer inspection, the ball is found to be floating on a stream of air blowing out of the cone; visitors interact with the ball, changing its position in relation to the air flow. The Chaotic Pendulum exhibit contains a deceptively simple set of pendulums in a steel and Plexiglas case. The visitor twists a protruding knob, expecting the resulting motion to be fairly predictable. But the device's motion is chaotic, extremely complicated and long-lived. Artist Sheldon Brown creates an urban/suburban/rural environment in which the visitor literally "paints" the flying landscape with highways, buildings, and automobiles. This exhibit was part of the Virtual Unreality exhibition. Live program from Side, Turkey Images from the Total Solar Eclipse that took place on March 28-29, 2006. Penn State University glaciologist Dr. Richard Alley explains why ice is cool. What is dark energy? Cosmologist Rocky Kolb explains how the South Pole Telescope will help us understand the properties and nature of this mysterious force. Christina, a geologist from Stanford University, investigates climate history by scouring sediment samples for diatoms, microscopic marine creatures that lived long ago in Antarctica's McMurdo Sound. Nadine, a glaciology graduate student from UC Santa Cruz, spent four weeks on the West Antarctic Ice Sheet investigating ice sheets and global climate change.