A great place to find the latest news about research in the sciences is Science Magazine, which is published by the American Association for the Advancement of Science (AAAS). The AAAS also publishes several other science journals that are included in the Science Magazine database. You can find a list of the journals on the Journals page.
You can find a few sets of instructions on how to use the site in the FAQ. A link to the FAQ is located at the bottom of the database homepage, under the section named Help. To search the Science Magazine database, click on the magnifying glass icon on the right side of the heading at the top of the database home page.