The following programs run natively on either PowerPC or Intel-based Macintosh computers (They do not require Rosetta to run.):
| Introduction to Topographic Maps version 2.0 | Universal Binary |
| Earth's Atmosphere and Its Seasons version 1.1 | Universal Binary |
| Theory of Plate Tectonics version 2.2 | Universal Binary |
Our programs that are not Universal Binaries will require Apple's Rosetta feature. These programs run on Intel Macs once Rosetta is installed.
The first time you run any software that requires Rosetta, you will get a dialog asking if you want to install Rosetta.

Click Install. This will only happen once for all applications that require Rosetta, so you may not even see this dialog. Once Rosetta has been installed, our programs should be fine.