Satellite data provide a cheap, effective way to monitor groundwater aquifer levels with millimeter precision: http://bit.ly/i9JKNG
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Satellite data provide a cheap, effective way to monitor groundwater aquifer levels with millimeter precision: http://bit.ly/i9JKNG