Se for dig selv ...
Seeing is believing ...
Google has released a big update to the historical imagery feature available only through Google Earth 5. The historical imagery contains a massive amount of imagery which surpasses the data you already see when viewing Google Earth satellite and aerial imagery by default. Google has basically been archiving the imagery they used in previous releases of imagery since 2005, plus historical imagery they've acquired from many sources for some places going back decades old. It's hard to express just how big this data really is - we're talking many, many terabytes (terrabytes?) of data! One terabyte is 1,000,000,000,000 bytes. [...]
Deforestation of Amazon
Read more: http://www.gearthblog.com/blog/archives/2009/03/google_earth_historical_imagery_upd.html