The advantages and positive effects of multiple coordinated views on search performance have been documented in several studies. This paper describes the implementation of multiple coordinated views within the Media Watch on Climate Change, a domain-specific news aggregation portal available at www.ecoresearch.net/climate that combines a portfolio of semantic services with a visual information explorationandretrievalinterface. Thesystembuildscontextualizedinformationspacesbyenrichingthe content repository with geospatial, semantic and temporal annotations, and by applying semi-automated ontology learning to create a controlled vocabulary for structuring the stored information. Portlets visualize the different dimensions of the contextualized information spaces, providing the user with multiple views on the latest news media coverage. Context information facilitates access to complex datasets and helps users navigate large repositories of Web documents. Currently, the system synchronizes information landscapes, domain ontologies, geographic maps, tag clouds and just-in-time information retrieval agents thatsuggestsimilar topics andnearby locations. 1

This study investigates the coverage of solid waste management on 1,142 websites maintained by companies, news media, and non-governmental organizations to validate an automated approach to content and language analysis. First, a frequency analysis of waste management terms is used to shed light on the breadth and depth of their environmental discourses, revealing that corporate and media attention to waste management is small compared to that of non-governmental organizations. Second, an investigation of their attitudes toward waste management suggests that companies avoid negative information in environmental communication, unlike news media or nongovernmental organizations. Ultimately, an automated tool for ontology building is employed to gain insights into companies ' shared understanding of waste management. The ontology obtained indicates that companies conceptualize waste management as a business processes rather than framing it from an ecological perspective, which is in line with findings form previous research. KEYWORDS