Pink
Snow
on
 
The
Alps
 
Screen 1 of 1
Scientists
 
are
investigating
 
the
appearance
 
 
of
pink
snow
in
 
the
Alps.
This
 
is
caused
 
by
 
a
type
 
of
 
microscopic
plant
 
called
algae
 
which
 
is
usually
seen
in
Greenland.