Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object. In modern usage, the term generally refers to the use of aerial sensor technologies to detect and classify objects on Earth (both on the surface, and in the atmosphere and oceans) by means of propagated signals (e.g. electromagnetic radiation emitted from aircraft or satellites).
Prediction made by UCLA geographers Thomas Gillespie, John Agnew, and a whole class of undergrads regarding where Osama Bin Laden might be hiding turned out to be surprisingly accurate, surprising scientists and authorities alike. They created a probabilistic model which concluded that there is a 88.9% chance that he is hiding in a city less [...]