The Official Google Blog announced this morning the release of Google Earth 5.0. How can you not love Google Earth?

And now, even more sweet goodness.

The one history teachers will especially enjoy is something called Historical Imagery:

Until today, Google Earth displayed only one image of a given place at a given time. With this new feature, you can now move back and forth in time to reveal imagery from years and even decades past, revealing changes over time. Try flying south of San Francisco in Google Earth and turning on the new time slider (click the “clock” icon in the toolbar) to witness the transformation of Silicon Valley from a farming community to the tech capital of the world over the past 50 years or so.

Just as previous versions have added Google Sky, Google Earth 5.0 has added underwater images:

Didn’t Google Earth always have an ocean? Technically, yes, well, sort of. We have always had a big blue expanse and some low-resolution shading to suggest depth. But starting today we have a much more detailed bathymetric map (the ocean floor), so you can actually drop below the surface and explore the nooks and crannies of the seafloor in 3D. While you’re there you can explore thousands of data points including videos and images of ocean life, details on the best surf spots, logs of real ocean expeditions, and much more.

One new feature I’m just now starting to play with that looks very cool is something GE calls Touring:

One of the key challenges we have faced in developing Google Earth has been making it easier for people to tell stories. People have created wonderful layers to share with the world, but they have often asked for a way to guide others through them. The Touring feature makes it simple to create an easily sharable, narrated, fly-through tour just by clicking the record button and navigating through your tour destinations.

Check out the video and then update. Pretty cool stuff!

[youtube=http://www.youtube.com/watch?v=GSuJq4UzkIA]