The Seattle Natural Hazard Explorer lets you explore where different parts of the city of Seattle, Washington are most vulnerable to potentially catastrophic geological events like earthquakes (previously) and volcanoes. It is one of many visualizations or choropleths that connect ever-changing data with explorable geographic locations, such as an Atlas for a Changing Planet and Syria: Epicenter of a Deepening Refugee Crisis
Esri Enables Federal Agencies To Open GIS Mapping Data To The Public ESRI is the world's leading maker of GIS software. Their initiative is incredibly important in making mapped/mappable data available to the world. They are basically giving government agencies an Easy Button for opening this up to the public. [more inside]
See how close you live to a nuclear power plant on this interactive map featured in Smithsonian. It's created by ESRI, home to all kinds of other maps, like the Battle of the Big Boxes, Ferris Bueller's Day Off, the location of uninsured Americans, a Timeline of the UK's Tallest Buildings, and more. [more inside]
Map enthusiasts might enjoy The Geography Network, a new venture from ESRI, vendor of the most used GIS system. The site includes an in-browser viewer, so you don't need to own any ESRI products to see the free data. If you do, though, the data's yours for the downloading. They've already got the latest TIGER census maps as well as a ton of maps and information from around the globe. They hope to create a central location for GIS data sharing, and they're off to a good start.