Each topic on Trends is "anchored" by an article from CNN.com, which "provides context", and links to content from up to 10 additional sources.
Linking out to other news outlets provides "a launch pad" for users "to explore new perspectives and related analysis from a diverse array of publishers", CNN said in a release, which adds that social curation "democratises the editorial process".
CNN Trends is fuelled by the technology behind Zite, a personalised newsreader for iPad, iPhone, Android and Windows Phone, that was acquired by CNN in August last year.
CNN Trends uses Zite's algorithm to display stories generating buzz, and marks the first major project between Zite and its parent company.
In the release CNN describes the new feature as "a news discovery dashboard that enables users to track and explore the web's most buzzed about stories".
"CNN Trends identifies the most conversation-provoking news topics to pair with a CNN story and content from up to 10 additional sources."
KC Estenson, senior vice president of CNN Digital, said in a statement: "A healthy media diet consists of news, analysis and perspectives from more than one source.
"CNN Trends embraces that concept and expands on it by allowing the social web to determine which stories are featured. It's the perfect place to discover new content and advance the narrative of a trending headline."
The release adds that the Trends is "a truly collaborative media experience".