A dozen or so officials gathered in a windowless room at the Johnson Space Center in Texas on the 12th day of the space shuttle Columbia's final flight for a routine briefing about its progress. The ...

CAPE CANAVERAL, Fla. — NASA hopes to test a thermal tile patch on the next space shuttle mission that could have been used to fix the gouge carved into the bottom of Endeavour during last month’s ...

Q We moved into an Eichler home in Palo Alto that was built in the early 1950s. We have two concerns. The gaps between some of the ceiling boards are as large as 9/16" and we can see something black ...

The June opening of the $21 million renovation project at the Hartford Public Library’s main branch has been postponed indefinitely because of a floor-tiling problem. The major project has been ...

Proving the “discrete” periodic tiling conjecture for high-dimensional lattices is a slightly different problem than proving the continuous version of the conjecture, as there are tilings that are ...

Last Sunday I published on these pages a column about farmland drainage and specifically about pattern tiling, which has become commonplace throughout Minnesota in recent decades to the detriment, I ...

One of the oldest and simplest problems in geometry has caught mathematicians off guard—and not for the first time. Since antiquity, artists and geometers have wondered how shapes can tile the entire ...