How do aircraft save jet fuel by descending gradually?

Last year, the Federal Aviation Administration implemented optimized profile descents at 42 airports, with the goal of saving millions of gallons of fuel and lowering CO2 and other pollutants. Another advantage is that there is less noise. Let's get through the technical jargon. Optimized Profile Descents (OPD) are innovative flight...

Truck drivers from Mexico have lifted their blockade of Texas bridges

Two Texas border bridges reopened Wednesday after commercial traffic was momentarily halted due to truck drivers' protests about increased inspections of cargo entering from Mexico. Mexican drivers lifted their blockades on the Mexican side of the Ysleta-Zaragoza Bridge near El Paso and the Pharr-Reynosa International Bridge, which connects the Mexican...