And, in a moment, we're going to see a view of the airflow.

You put a bit of black plastic on the side of a building, it'll heat up, and you'll get passive airflow.

Here, we're trying to visualize the airflow around the wings of the mosquito with little particles we're illuminating with a laser.

After several phases and stages, the study process under way has, since 1996, focused on a basic alternative consisting of a tunnel structure drilled under the sill of the Strait, comprising two unidirectional railway galleries connected to a central service and safety gallery.