Biodiversity provides essential services to human societies. Many of these services are provided as public goods, so that they will typically be underprovided both by market mechanisms (because of the impossibility of excluding non-payers from using the services) and by government-run systems...

Die schnelle Entwicklung des Informationsmediums Internet bietet Online-Zeitungen ein hohes Wachstumspotenzial. Allerdings können die bisher meist kostenlosen Online-Zeitungen allein durch Werbeeinnahmen kaum profitabel gestaltet werden. Timo Schulze untersucht, wie optimale Nutzungspreise für...

Biodiversity provides essential services to human societies. Many of these services are provided as public goods, so that they will typically be underprovided both by market mechanisms (because of the impossibility of excluding non-payers from using the services) and by government-run systems...