Olhar Digital has a video review of Helioid in Portuguese:

Helioid is a small startup out of New York that’s trying to change that, by delivering results tied to categories of information. It’s aiming at students, professionals and others who are trying to do exploratory research across a topic, and aren’t just looking for a specific answer to a question.

Consider a high school physics student researching neutrinos, the graphic below depicts how she can use Helioid to explore and refine her search, gathering knowledge as she goes.

We’ve rolled out a new set of search refinement features on Helioid. Now if you click on the colored circle next to a category name, your original query is amended with the name of the category, producing a new search drilling further down into the set of results. Also, a “View By Site” button has [...]