Database of articles relevant to the human impact on the environment including global warming, green building, pollution, sustainable agriculture, renewable energy, recycling, and more.
Citation database of scholarly articles spanning the sciences, social sciences, arts, and humanities. Indexing goes back to 1900. This database can also search for articles that cite a particular work or author. Formerly called Web of Knowledge.
Citation database of scholarly articles, books, and conference proceedings spanning the sciences, technology, medicine, social sciences, arts, and humanities. For an alternative, try Web of Science.