Google Books - The massive book digitization project. To limit your search to books available in full text click on the "Full view" radio button.
Grantsinfo.us - Find information about funding programs, scholarships, grants, and loans offered by the US federal government, corporations, and foundations.
GreenFILE - Covers information on all aspects of human impact on the environment. Topics covered include global warming, green building, pollution, sustainable agriculture, renewable energy, recycling, and more.