PRI: The Maeslant structure is the biggest mobile barrier in the world -- picture a pair of steel lattices twice the size of the Eiffel Tower, lying down on either side of the channel connecting the Netherlands second-biggest city to the North Sea. The Dutch built the massive gate in the 1990s to protect Rotterdam from a storm surge of up to three meters.
Series: Living with Rising Seas
The oceans are rising. Untold millions in coastal cities around the world are threatened. But the Dutch are proving...