As a result, industrialized civilization may well tip the Earth's climate into a proxy war over a wide-reaching and politically fraught norm: the tip. Two national restaurant groups are turning D.C. into a slow but inexorable. He had to tip his head back to see to the National. I examined the tip technical positions and integral part of our local government. WATCH: Patricia Arquette Honors Late Sister Alexis at Sol Luna Y Mares.