Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

Parallel lines close parallel lines Lines which never meet and stay the same distance apart. Parallel lines are indicated by a pair of arrows. are two or more straight lines that remain the same ...

There is no indication the UK government would follow the Danish example of offering substantial sums - as much as the ...

Pimpri-Chinchwad: The proposed railway bypass line recently announced by Maharashtra Deputy CM Ajit Pawar is being tremendously opposed by the residents living in villages along the proposed line.

The FAA ordered airlines to cut thousands of flights ahead of this weekend as the agency deals with air traffic controller shortages during the government shutdown.

The Next Generation episode is one of Brent Spiner's best performances and raises one of Sci-fi's critical debates.

SF Green Line service will be suspended from Park Street to Union Square starting November 4 due to infrastructure upgrades.

The FAA ordered airlines to cut thousands of flights ahead of this weekend as the agency deals with air traffic controller ...

Backing into your driveway is safer than driving head-in, some say. But others feel the practice can make it hard to tell ...

Brussels policymakers examining changes to free governments hands to subsidise affordable housing developments ...

The Internet is full of other incidents involving robots in lab, factory, and even festival settings.

Growing connectedness since 2008 may have deepened social and political divides. More friends could mean more conflict—and less tolerance.