Tucson’s skies are slightly darker thanks to the completed streetlight conversion project, according to a study by the Tucson-based International Dark-Sky Association. The study, however, was limited ...

The function of an LED is to emit light when the device is forward biased within its operating range, and it’s known by most ...

More San Diego County students passed the tests than a year earlier. But performance still ...

After Dylan Mulvaney, the transgender influencer, promoted the beer on Instagram, conservatives called for a boycott. The fallout grew to include the retailer Target and the country singer Garth ...