Offers citations and abstracts about the earth sciences including palaeontology.

Contains the full text of McGraw Hill's Encyclopedia of Science and Technology as well as science news and videos.

Maintains the peer-reviewed research journals in the chemical and related sciences from the American Chemical Society (ACS).

Maintains a daily publication on climate policy.

Freely available electronic journals

The Encyclopedia of Earth (EoE) is a collaborative, open, peer-reviewed reference resource about the Earth, its natural environments, and the relationship between the environment and society.

Includes full text, technical publications from the U.S. Government. 

Contains information on grey literature produced in Europe. Covers science, technology, biomedical science, economics, social science and the humanities.

Portland State University's Digital Repository, PDXScholar, preserves the University's research, unique resources, and other scholarly output with the goal to provide persistent, open access to that work.

Features selected, authoritative science information provided by U.S. Government agencies including research and development results.