The narrow wedge of the zodiacal light (left) reaches nearly to the Milky Way (right) on Nov. 1 from near Kenton, Oklahoma. The zodiacal light stands high in the eastern sky this time of year but ...

Dalhousie researchers and their industrial partners have piloted the world’s first municipal-scale UV LED reactor for wastewater treatment, a groundbreaking innovation that has set the stage for a ...

The streetlight in front of his house has a sensor that faces westward, and flips the lamp on once the sun has disappeared over the horizon. As it turns out, [Chris’s] third floor window is due ...