Google - The favorite search engine for any subject.
Google

Google Scholar - Search scholarly literature, including peer-reviewed papers, theses, books, preprints, abstracts and technical reports from all broad areas of research. Brooklyn College links will show up in your results if working on campus or through the proxy server. Doing your research off-campus? Click on Scholar Preferences, add "Brooklyn College" to the Institutional Access search box and save your preferences to see what you can get from Brooklyn College.
Google Scholar

Scirus - Search over 200 million science-specific Web pages.
www.scirus.com
Questionpoint Knowledge base - Search through questions posted by users just like you and answered previously by librarians all around the world!
 
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Yahoo Audio Search - Find over 50 million audio files on the web using this new Beta engine.
Librarians' Index to the Internet - Get access to dozens of additonal search engines, such as "Search & Destroy," a punk rock search tool. Also link to up-to-date information about search engines.