Several million people currently have accounts in massively multi-player online games, places in cyberspace that are effectively large-scale shared virtual reality environments. The population of these virtual worlds has grown rapidly since their inception in 1996; significantly, each world also...

In March 1999, a small number of Californians discovered a new world called "Norrath", populated by an exotic but industrious people. About 12,000 people call this place their permanent home, although some 60,000 are present there at any given time. The nominal hourly wage is about USD 3.42 per...

The transport sector is the only sector where carbon emissions continue to grow. This has led policy makers to propose ambitious policies to reduce emissions in the car sector, in particular fuel efficiency standards, portfolio mandates for Electric Vehicles and purchase taxes or subsidies. A...