Learn how to calculate the variable cost ratio to balance production costs and revenues. Understand its role in optimizing profit margins and business decision-making.

Science teacher Eva Acton with Sam O’Farrell, from Drumcree, on left, and on right, Connor Cassidy, whose project is the cleverly-titled ‘Gaitkeeper’.

The native just-in-time compiler in Python 3.15 can speed up code by as much as 20% or more, although it’s still experimental ...

Inkjet or laser? Need just printing, or have to scan and copy, too? Seeking low-cost ink, or a low-cost printer? Here's how to choose the right printer for home or work, backed by our top lab-tested ...

Your photos deserve to exist as more than mere bits and bytes. Here's how to pick the right photo printer—whether for humble snapshots or big, bold art prints—and our top lab-tested picks. I’m the ...