We have two great new showcases up on the Cesium website.
NASA Weather Stations Visualizer displays average monthly temperature data over time from weather stations across the world: http://cesiumjs.org/demos/NASAweather.html
VirES for Swarm allows users to interpret geomagnetic data gathered from the satellites of the European Space Agency’s Swarm mission: http://cesiumjs.org/demos/VirES.html