Recently, a cheerful 100-year-old message in a bottle was found on the south-west coast of Australia. In it, a World War One ...

👉 Learn how to find the derivative of a function using the product rule. The derivative of a function, y = f(x), is the measure of the rate of change of the function, y, with respect to the variable ...

The NFL's last foray into replacement officials ended in embarrassment for the league when a botched call and comic confusion in a prime-time game led to the end of a lockout that marred the first ...

The NFL is attempting to protect itself in case it can't reach a new collective bargaining agreement (CBA) with the NFL Referees Association (NFLRA) before its 2026 season. How? The league is ...

PHOENIX (AP) — The NFL’s competition committee approved a one-year rule for the upcoming season that would allow the replay center in New York to correct “clear and obvious mistakes made by on-field ...

FILE - Referee Clay Martin (19), far left, talks with the officiating crew during an NFL football game between the Arizona Cardinals and the Cincinnati Bengals, Sunday, Dec. 28, 2025, in Cincinnati.

The NFL adopted a number of rule change proposals in Tuesday's annual league meetings at Phoenix, including ones to help replacement referees under a work stoppage by regular officials. The moves came ...

The NFL is hoping to avoid another “Fail Mary” situation. With the league and the referees union at an impasse, the NFL voted Tuesday to approve a one-year policy that would assist replacement refs to ...