31.   At night, however, clouds, which act as a source of radiant energy, limit nocturnal cooling and, in this case, prevented record-breaking low temperatures.

32.   At these depths, low temperature and high pressure allow methane to combine with water to form solid methane hydrates.

33.   Because of the low temperatures involved, the sugar granules remain intact, leaving a slight, pleasant graininess.

34.   Blizzard warnings were posted across eastern Colorado as the combination of low visibility, low temperatures and strong winds met the criteria for this type of storm.

35.   Besides the debilitating effects of the cold itself, the low temperatures meant that the winds would have been calm.

36.   Bob Stalker, a National Weather Service meteorologist, said the low temperatures are from two massive, slowly moving weather fronts drifting over Canada.

37.   A chilly dawn will grip most places from the Midwest to the East Coast, with many low temperature records being broken.

38.   A mound of arctic air moved into Maine, setting up ideal conditions for very low temperatures.

39.   All-time low temperatures in Indiana and Maine.

40.   But in contrast to the catalysts Engelhard already supplies for cars, this one works at a very low temperature.