Landsat: 2015-02-06, 30 meters
Planet Labs: 2014-09-01, 5 meters
Digital Globe: 2014-10-02, 0.5 meter
"A data scientist is a programmer that knows statistics better than other programmers; and a statistician that knows programming better than other statisticians. A data scientist is not necessarily a good statistician or a good programmer.
IMAGERY ⟶ "Vegetation has declined by 23%"
i.e., raw information into actionable information.
(Thanks.)