These exploit the fact that gravitational waves should cause space to stretch in one direction and shrink in the dimension at right angles to it.

ECONOMIST: Fundamental physics

The BBC's David Willey in Cassino said that the war graves of more than 4, 000 British and Commonwealth servicemen stretch in every direction from the site.

BBC: NEWS | Europe | Veterans remember Monte Cassino

On a fog-shrouded evening on the penultimate day of 1906, a dead-heading train roared down this stretch of tracks near Washington's Catholic University, coming upon a slower passenger train heading the same direction on the same track.

CNN: Welcome to obscure Washington, D.C.