If the atmospheric visibility near the earth's surface is reduced to 0.62 mi (1 km) or less due to floating water droplets in the air, it is called fog. Fog can form in two ways: either by cooling the air to its dew point (e.g., radiation fog,...

Defined by the International Standards Organization (ISO) as a meteorological condition in which the presence of a suspension of water droplets in the air reduces visibility to less than 1 km. See also:...

A colloidal dispersion of a liquid in air. Smog is an artificial fog produced near the ground by photochemical reactions in polluted atmospheres, see Photochemical oxidants. see...

Fog is a cloud in contact with the ground. Fog differs from other clouds only in that fog touches the surface of the Earth. The same cloud that is not fog on lower ground may be fog where it contacts higher ground such as hilltops or mountain ridges....

Environmentalism: Global warming alarmists were hit with a well-deserved setback Monday, when a federal judge threw out a lawsuit against automakers. Too bad, though, that the ruling won't end the fearmongering.Exactly one year ago, then-California Attorney General Bill Lockyer filed suit against the six largest...

When a burglar broke into a Medford pharmacy this week, looking to snatch some drug, he was foiled by fog. The dense fog, a new technology offered by alarm companies, made it impossible for the robber to find the sought-after narcotics.Pharmacy break-ins are prevalent throughout...

Holiday chaos set in at Europe's busiest airport Thursday as thick fog forced the cancellation of hundreds of flights, leaving thousands of travelers to spend the night in tents at Heathrow terminals.British Airways canceled a quarter of its short-haul flights within Britain and Europe for...

Tens of thousands of passengers were stranded Thursday after a thick blanket of freezing fog forced hundreds of flights to be canceled at Heathrow, Europe's busiest airport.Heated tents, sleeping mats and catering stalls were set up to accommodate irate travelers, many of whom were affected...