"The more clearly we can focus our attention on the wonders and
realities of the universe about us, the less taste we shall have for
destruction." - Rachel Carson
This site from the University of Pennsylvania contains free ebooks from Google Books, University of Michigan, HathiTrust, Internet Archive of Ebooks, Project Gutenberg and more. It is a one-stop shopping for free ebooks. You can also search by call number.
The Biodiversity Heritage Library (BHL) is a consortium of natural history and botanical libraries that cooperate to digitize and make accessible the legacy literature of biodiversity held in their collections and to make that literature available for open access and responsible use as a part of a global “biodiversity commons.” BHL also serves as the foundational literature component of the Encyclopedia of Life (EOL). BHL content may be freely viewed through the online reader or downloaded i
The Biodiversity Heritage Library (BHL) is a consortium of natural history and botanical libraries that cooperate to digitize and make accessible the legacy literature of biodiversity held in their collections and to make that literature available for open access and responsible use as a part of a global “biodiversity commons.” BHL also serves as the foundational literature component of the Encyclopedia of Life (EOL). BHL content may be freely viewed through the online reader or downloaded i
This encyclopedia contains articles contributed by experts that are reviewed and edited. Searchable by topic, author or keyword, each articles contains links, table of contents, suggestions for further reading and instructions on how to cite the article.
Outstanding resource, the Encyclopedia of Life is an open- access, collaborative encyclopedia whose information is gathered from existing databases, from scientists and from nonscientists, to create a collection representing every living organism on Earth.
This site is supported by the NSF and contains STEM resources related to energy and the environment. There are 31 different classifications to browse with Education and Training containing the greatest number of materials. Subjects include air quality, safety and health, sustainability and more.
Search and display the full-text of reference books. Subjects: Many subjects, including History, Education, Film, Health, Science, Social Science Info type: encyclopedia and reference book entries. List of sources.
Free online database from the Invasive Species Specialist Group of the Species Survival Commission of the International Union for Conservation of Nature emphasizing the invasive alien species that threaten native biodiversity and covers all taxonomic groups from micro-organisms to animals and plants in all ecosystems.