The sand only moves if it is light. When the weather and climate changes, the ma...

has2k1 on May 4, 2016 | parent | context | favorite | on: Scientists say sudden oak death epidemic is no lon...

The sand only moves if it is light. When the weather and climate changes, the make up of the sand changes and so does the way it moves. It is a complicated process and it would definitely have some surprises.