Strange
But
True
 
Screen 1 of 2
 
The
strongest
muscle
in
 
the
body
 
is
 
the
tongue.
 
A
mole
can
dig
 
a
tunnel
300
feet
long
 
 
in
 
just
one
night!
 
There
 
are
about
 
6,800
languages
in
 
the
world.