Google+ has announced a new feature called "Topics", which lets you find interesting high-quality contents of Collections, Communities and people by interest.

To see recommended topics related to your interests, just visit Google+ home page and scroll down to see the “Topics to explore” cards. Google say in their official blog post "Topics available in English, Spanish and Portuguese, covering everything from black-and-white photography to hiking and camping. So whether you’ve recently discovered the wonders of woodworking, love gardening, or can’t get enough street photography, there’s a stream of unique and interesting stuff waiting for you on Google+"