I just loaded Climate Prediction as a second project but the screen save still shows only the Seti project. Is there a way to switch between them?

Hi, Dave, welcome aboard!

No proper answer for your query, because I don't use screensavers, but I think what you see depends upon which project is currently active (under boinc's management).

Do you run a P4 with one project per logical CPU?

Many people avoid using the screensaver in CPDN because it can be very expensive in terms of resorces (depends upon the machine's configuration).

If "depends on which..." isn't correct, someone who's used screensaver should be along to clarify things for you.

[Edited to correct a typo.]

Edit2: You can also see the globe under the "work" tab (version 4.19). Right-click on the CPDN line and click on the pop-up window.
___________________________________________