More recently, he has begun writing about business management and other broad topics.

That would start you on history, which is a very broad topic.

Biodiversity is a very broad topic, as you can see.

The genetics of skin cancer is an extremely broad topic.

But this volume, first published in 1968, covers a broader, more important topic.

As a result, evidence about broader topics is usually accumulated gradually.

The live shows were mostly focused on one broad topic each.

A clear report on such a broad topic with its challenging title 'for 2010' seemed a huge task.

The implications of this simple idea, though, constitute a much broader topic.

More broad topic now on the subject of water.