There's already a wall at the U.S.-Mexico border.
Here's what you should know about it:
Thank-you Bush & Clinton
the urgency of the nuclear dangers that [we] – and the broader scientific community – are trying to convey to the public and political leaders around the world.
from Moscow to Chicago, atomic explosions will strike midnight for Western civilisation.
international leaders are failing to perform their most important duty – ensuring and preserving the health and vitality of human civilisation.
It is two and a half minutes to midnight, the Clock is ticking, global danger looms. Wise public officials should act immediately, guiding humanity away from the brink. If they do not, wise citizens must step forward and lead the way.