In the early years of the 19th century, farmers in western pennsylvania kept their wagon wheels greased with puddles of bubbling muck that studded the countryside.
Official: Be careful. Yesterday it rained so the track is slippery. Don't skid, and watch out for puddles.
The scientists found that Titan, Saturn's largest moon, is covered with puddles of liquid methane, which give rise to a fog that's as thick as pea soup -- and smells a whole lot worse.
Camels munch on green shrubs outside town, and donkeys drink puddles of muddy water.
Let your children stop and look at bugs, collect leaves or stomp in water puddles.
