<br>Artist Calvin Seibert battles time and nature in his work every day. Ultimately, every day, he loses.
Seibert spends his summers building sandcastles.
Modern, stunning, mind-melting sandcastles.
And as impressive and inventive as each one is, they all eventually go right back where they came from.
But it doesn't stop Calvin from dreaming and building all over again.
Like most kids, Seibert grew up playing in the dirt....