Nuclear Comprehensive Test Ban Treaty Monitoring Network [278]

Locations of the seismic, hydroacoustic, infrasound, and radionuclide sensing facilities of the Comprehensive Nuclear-Test-Ban Treaty International Monitoring System, as well as The International Data Centre of the CTBTO, located in Vienna.
As of 2009 the treaty is not yet in effect, pending ratification of China, Democratic People's Republic of Korea, Egypt, India, Indonesia, Islamic Republic of Iran, Israel, Pakistan and the United States of America.

Airplane Disasters [150]

Most of the major airplane disasters occurred in the Northern Hemisphere. Shown are crashes with more than 150 victims.

Car-free Countries [325]

Many industrialized nations have about half as many cars as citizens. 
Green overlaid countries have the least number of cars per capita:  up to 10,000 inhabitants would have to share a single motor vehicle.

Time Zone Conflicts

Red indicates areas where no international agreement seems to exist on what time it is there