On my morning news check I found an interesting link. Seems to be a Mac OS X beta version of Google Earth. Unfortunately I can’t download and test it right now, but there are already a few screenshots and reviews around.
Update:
At home and able to test Google Earth on Mac OS X: on an iMac G5 2GHz RevB equipped with 1.5 GB RAM and connected via 3072/384 kbps to the internet it works nicely! After observing memory & cpu consumption for a while I would suggest to stuff some extra memory into your Mac before using Google Earth. Well, some extra memory for Mac OS X is always a good advice. IMHO the performance is comparable to the Windows XP machine in my office (a P4 3GHz with 1GB RAM). Anyhow, great to see Google Earth finally on Mac OS X!!

Note:
The link above obviously leads to a leaked beta version of Google Earth for Mac OS X hosted by yousendit.com. If you think this download violates your rights please send any further comments directly to abuse@yousendit.com.