Using paper figure for public talk I’m giving a public talk (to laypeople in a sci-com event) and wanted to showcase some figures from research papers that weren’t mine. I wanted to know:


If putting citations (Author, Year) followed by a final slide of references was acceptable, or;
Do I need to have “Copyright [journal name]”, or;
Do I need to get permission from author/publisher, or;
ls such a thing even allowed outside of academic conferences


Do the answers to the above questions change if the journal is open access or behind a paywall?

Thanks.
You can use all this information in a public talk. You should tell your audience where it comes from, but the details don't need to be part of the ongoing presentation. Consider a handout so that they can go look for themselves if they are curious.

The fact that some of the information is behind a paywall does not prevent you from referring to it, as long as you obtained it legally and do not quote large parts of it.

You do not need any permissions. It might be nice to write the authors to tell them that you used their work in your talk.

+1 for sci-com.