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We learn at
that warm air rises and cool air sinks. This is a basic
of science. A study from the University of California found there are
in which cool air rises. Researchers found that in tropical
, cold air rises because of the lightness of water
. In warm, humid climates, water particles become more
and can help cool air rise. The lead researcher said: "Water vapour has a buoyancy
which helps release the heat of the
to space and reduce the
of warming. Without this lightness...climate warming would be even
."
