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The purpose of this step is to take your broad topic and narrow it down to what you are specifically looking for so you can write your thesis/specific purpose statement. You want to look for subtopics or additional search terms in this step.
You can try searching the internet, using the Content Box in Wikipedia or search other encyclopedias to help narrow down your topic. You can not normally cite these sources for academic research (check with your professor), however they are great resources for narrowing down your topic.
Bioethics.net blog - Bioethics.net collects news and analysis from among hundreds of sources, linking you to news and commentary you might have missed in the day's papers and magazines.
National Catholic Bioethics Center - The National Catholic Bioethics Center (NCBC) was established in 1972 to reflect on these developments and to promote and safeguard the dignity of the human person in health care and the life sciences.
The American Society for Bioethics and Humanities - An educational organization whose purpose is to promote the exchange of ideas and foster multi-disciplinary, inter-disciplinary, and inter-professional scholarship, research, teaching, policy development, professional development, and collegiality among people engaged in all of the endeavors related to clinical and academic bioethics.