Among the submissions are walls with solar panels, wire mesh and sloped, slippery surfaces. There are even walls that are no walls at all — statements standing instead as protests of a policy ...

While new border wall construction has been halted by the Biden administration, the border fence in Calexico is seeing new updates to the existing barrier with some added sheets of metal mesh.

And when it comes to cleaning up your already polluted air, mesh structures like this one in Mexico City are a stylish way to filter a whole city’s worth of air. This porous wall currently being ...