Today’s map comes from Governing, a media platform in the US covering politics and policy stories. The map is a simple visualization of biking data in US cities where biking is a large proportion of the transportation style. The simplicity of the map is its strength – larger circles mean more bikers. The interface allows for users to first examine the general trends on the larger map, then drill down by zooming or by clicking on specific circles to get more information. The map utilizes what looks like TileMill, tiles with associated popups and a legend.