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

Researchers in Spain reviewed six models used to calculate incidence angle modifier (IAM) losses in photovoltaic systems. They identified the Martín-Ruiz model as the most comprehensive, as it ...

Approximately 10,700 new power line repairers are expected to be in demand from 2023 to 2033 due to industry growth and retirements. Many retiring lineworkers choose early retirement or transition ...

Mice like to travel up against linear edges. Space them out a few feet apart. Set them perpendicular to the wall with the trigger end against the vertical surface, or in small spaces, set two traps ...

Heads up for CTA riders who will be out and about this weekend: Four busy train lines in the Loop will be shut down. The transit agency will be replacing "critical track switching equipment at the ...

Oilers stars Leon Draisaitl and Connor McDavid have yet to click offensively. Bruce Bennett / Getty Images For much of the preseason, it looked like Edmonton Oilers head coach Kris Knoblauch wasn’t ...

More than 40 memorial monuments at the Rhode Island Military Cemetery provide a lesson in history and honor the state's ...

Lexington County confirmed that Lumos Fiber has a permit for construction all throughout the Laurel Meadows subdivision. After repeated reports of water line strikes, the county sent inspectors and ...

CHICAGO (WLS) -- The CTA gave notice Wednesday about this weekend's downtown elevated track disruption, but many say they were caught off guard. Some people are opting for more expensive options to ...

Prolonged work and a lingering odor from gas line construction have left many Taylorsville residents frustrated. Enbridge aimed to complete the work by late summer. Now, it's nearly November, and ...

Indiana football defensive end Kellan Wyatt will be sidelined "long term" with a knee injury. Wyatt suffered the injury during the fourth quarter of a win over Michigan State. He is second on the team ...

The Toronto Blue Jays welcome the defending champion Los Angeles Dodgers to the Rogers Centre for Game 1 of the 2025 World Series on Friday night. This marks the first World Series appearance for the ...