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

The proof, known to be so hard that a mathematician once offered 10 martinis to whoever could figure it out, uses number ...

The Buffalo Bills played a masterful, physical brand of football chess against the suddenly hot Kansas City Chiefs, winning 28-20 and improving to 6-2. Buffalo’s win at least temporarily sends Kansas ...

This engineering exam, which is a gateway to some of the premium engineering colleges such as IITs, NITs and more, cover ...

Let's explore some common examples of potential energy curves and what they tell us about the motion of an object: ...

International Business Machines Corporation ( IBM) Q3 2025 Earnings Call October 22, 2025 5:00 PM EDT Welcome, and thank you for standing by. [Operator Instructions] Today's conference is being ...

With a table full of data points representing different force and acceleration values, Angela and Carlos faced the crucial ...

The Silver City Town Council held a regular meeting October 14, 2025. Attendance to the meeting included Mayor Ken Ladner, Mayor Pro Tem Guadalupe Cano, and Councilors Nicholas Prince, Rudy Bencomo ...

High-frequency weekly indicators provide an up-to-date forecast and nowcast of the U.S. economy, signaling changes ahead of ...

Astronomers are rethinking one of cosmology’s biggest mysteries: dark energy. New findings show that evolving dark energy models, tied to ultra-light axion particles, may better fit the universe’s ...

For the first time, an international research team led by the Shanghai Astronomical Observatory (SHAO) of the Chinese Academy ...

Learn how Hubble is measuring the expansion rate of the Universe in this new explainer from NASA's Goddard Space Flight ...