It is possible search for recently published articles in Discovery.
When you've run a search, on the results page above the filtering menu, you will see a "Sort" dropdown. The default is "best match" according to the algorithm, but if you click on the dropdown, you'll be able to sort by "Date(Newest First)". A short search on the phrase "regenerative tourism" below to demonstrate.
Click on "Date(Newest First)", and the articles should sort according to most recently published.
