Indexes high-impact journals across many different fields. 1900 - present.

A very strong database to search for environmental topics.

Daily and current news; also tracks environmental and energy action in Congress.

Covers all aspects of physics, including atmospheric physics

Strong coverage of environmental policy,1973+

Research and policy on ocean and freshwater contamination, 1990+ .Other ASFA parts at WHOI

Indexes dissertations and theses from 1861 to date. Full text for many theses, 1997+

Also contains many sci/tech handbooks, interactive tables and data search options.

2d edition, 2008

2012

From 2013, 4 online volumes cover health, energy, water, food, and ecosystem vulnerabilities.

2013

"Provides a holistic consideration of climate change that goes beyond pure science, considering cultural, historical, and policy-driven aspects of this important issue." 2013.

Published in 2011, this has over 330 entries covering history and present-day advances.