This example uses PHP and the Magpie RSS Parser to display the top 10 articles from EnvironmentalHealthNews.org's main RSS feed. MagpieRSS is an excellent choice because it is Open Source, easy to install, easy to use, and provides caching by default. Caching provides for better performance for your web server (and for ours), while still keeping the news current on your site.
You can easily substitute another feed from EHN (e.g., the climate change feed) or the number of articles to display. Styling is accomplished with embedded CSS. View the PHP source code