In the papal conclave to elect a new pope, here's a look at what the color of smoke (black or white) means after each vote.

Thick fog warnings are in place across 10 U.S. states ... directly freezes into ice crystals), and super fog (formed from a mixture of smoke and moisture released from a damp fire).

In polluted cities like Mumbai it’s impossible to find stars in the sky. The smog created by the mixture of smoke and fog ...

Grandfather of 15 Identified as Truck Driver Killed in Colorado Train Derailment: He 'Loved What He Did' Super fog forms when a mix of smoke and moisture from damp, smoldering brush, leaves ...