Though sun halos can happen year-round, they are especially noticeable in the winter when ice-filled cirrus clouds are more common.

Trent materialises out of the dark, slides an arm around Lizzie’s shoulders, slips a cigarette into her mouth. She inhales, sighs. He grins at Corinne, huge teeth appearing, luminescent in the ...

A new bill aimed at cleaning up Utah's air is intended to encourage companies to upgrade to newer, cleaner heavy-duty trucks.