Now UPS is testing a technology designed to close that gap and, possibly, bring sweeping new efficiencies to the entire air traffic control system without compromising safety.

FORBES: Magazine Article

Droppings that looked like panda scat were collected and brought back for testing, and the results confirmed that after a gap of 20 years, pandas have begun their return to the valley.

BBC: The return of China��s wild panda

This plane, which AeroVironment hopes to start testing by next spring, is designed to fill a surveillance gap that military and intelligent services are desperate to address, so-called persistent surveillance.

FORBES: Companies, People, Ideas

The educational gap between whites and non-whites has narrowed dramatically in Texas since school testing began (which was before Mr Bush became governor).

ECONOMIST: America��s education choice