Scirus Launches New Toolbar

New Functionality Makes Finding Valuable Scientific Information on the Web Even Easier.

Amsterdam, 21 December, 2004 - Elsevier announced today that its free science-specific search engine, Scirus, has introduced a new version of its downloadable toolbar. The toolbar includes indispensable new functionalities for finding scientific information on the Web, and enables users to search directly on Scirus or through Scirus Web Sources and/or Journal Sources, from anywhere on the Internet.

Scirus’ new functionalities include:

* Pop-up Blocker: Eliminates pop-up advertisements on the sites being viewed.

* Highlight: Facilitates searching by highlighting terms on the pages visited by placing a colored bar over it.

* Last Search: Allows users to view their last search.

* Submit Web Site: Allows users to inform the Scirus Team if they have found interesting Web sites to add to the index.

* Word Finder: Indicates the words searched on a page and makes it easier for the user to find the specific terms.

"At Scirus, we strive to meet and exceed the needs of our over one million users by continually improving our product and offering new functionalities," said Ammy Vogtlander, general manager of Scirus. “We are excited to introduce the new toolbar that makes finding scientific information on the Web even easier.”

The Scirus Toolbar is freely downloadable at www.scirus.com.

About Scirus
Launched in April 2001, Scirus is the most comprehensive science -specific search engine available on the Internet. Driven by the latest in search engine technology, it covers more than 167 million pages and documents and serves a user community of over 1 million researchers, students and scientists worldwide. Scirus has won several international awards including the Search Engine Watch award for ‘Best Specialty Search Engine’ in 2001 and 2002 and the Web Marketing Association WebAward for ‘Best Directory or Search Engine Website’ in 2004.

About Elsevier

Elsevier is a world-leading provider of information solutions that enhance the performance of science, health, and technology professionals, empowering them to make better decisions, deliver better care, and sometimes make groundbreaking discoveries that advance the boundaries of knowledge and human progress. Elsevier provides web-based, digital solutions — among them ScienceDirect, Scopus, Elsevier Research Intelligence,and ClinicalKey—and publishes over 2,200 journals, including The Lancet and Cell, and over 25,000 book titles, including a number of iconic reference works.

The company is part of Reed Elsevier Group PLC, a world leading provider of professional information solutions in the Science, Medical, Legal and Risk and Business sectors, which is jointly owned by Reed Elsevier PLC and Reed Elsevier NV. The ticker symbols are REN (Euronext Amsterdam), REL (London Stock Exchange), RUK and ENL (New York Stock Exchange).

For more information, contact:

Susan Vugts, Marketing Manager Scirus

T: +31 (0)20 485 3101

Email: s.vugts@elsevier.com

Natasha Molamusa, Fusion PR

T : (212) 651-4207

Email : natasha.molamusa@fusionpr.com