CNET slide show:
Google Earth 4 beta
This splendid mapping and sightseeing tool puts the whole world in your hands, then hands over the tools to let you build your own world.
Slide 5 of 12
Fly high, swing low
Not only can you see mountaintops from the sky, you can also angle Google Earth's views to glide around the sides of hills, as if you were flying close to the ground, and spin the navigation wheel to look at all 360 degrees. Google's updated high-resolution images display 70 centimeters or more of ground per pixel.