Learn how to determine the observed intensity of a supernova using core physics ideas like luminosity, distance, and the inverse-square law. This video walks through the reasoning and calculations ...

Costco rarely sets trends. I remember walking its aisles years ago and sampling new items, but noticed the chain was rarely ...

Stephanie began as a PCMag reporter in May 2012. She moved to New York City from Frederick, Md., where she worked for four years as a multimedia reporter at the second-largest daily newspaper in ...

Citizen science platforms including iNaturalist are leading to major new discoveries and are becoming crucial to the work of scientists. How do we ...