Selecting a Topic for an Informative Speech

How would you select a topic you may want to give an informative speech on?

Informative speeches are to educate and inform the audience about something, not to persuade them. Do you have a personal connection to the topic? Is this truly Informative, or is this more persuasive? Perhaps you can adjust the wording or focus of the topic to be strictly informative. Is it appropriate for the length of speech? Is the topic too broad to fit into a 5-minute speech or too narrow that you won’t have enough to speak about? Perhaps you can adjust this. Is this topic appropriate for the audience?