The following excerpts are from Google Translate blog:

“To help bridge language barriers between you and the news of interest to you from around the world — and to bring you more diverse perspectives on foreign events — we’ve added a new “translate” button to the expandable story boxes in the U.S. English edition of Google News.
Clicking the translate button reveals the English translation of the original headline using Google Translate. Clicking on the headline takes you to the publisher’s website where you can choose to use Google Translate to see an English version of the entire article. Headlines are labeled with their country of origin.

To do this, we look for foreign articles from local sources on a relevant news topic.” Read more.

See: Google Translate blog