• Academic Search Complete  A general database where it's easy to find articles written for non-experts, eg in magazines..
• Web of Science  Indexes research level articles from high-impact journals in all disciplines; easy to find review articles
• Agricultural & Environmental Science  An example of a subject specific database
• Compendex  This database indexes articles and conference papers in all fields of engineering

See also

Global Newsstream Access to over 2500 US and international news sources