So, I think the key words here are 'topic' and 'idea'. And what I mean by that is that we use the preposition 'about' with verbs that are usually used with topics, ideas or situations.

The search for 84-year-old Nancy Guthrie, mother of “Today” show host Savannah Guthrie, has stretched into a fourth, anguished week, with mounting pressure on investigators and a family grappling with ...

Smart, as its name implies, requires lots of data from a range of sources and types. For example, smart cities require data ...

The ‘Getting Started’ section is like the quick-start guide for a new gadget. It gives you the most important first steps, ...