More than 3 million square miles of territory to protect, 10 thousand miles of border to guard and a fence to build 10, 11 or 12 miles high. It is better to have less thunder in the mouth and more lightning in the hand.

At 1.7 million square km (656,000 square miles), up to 3 km (nearly two miles) thick and a little smaller than Mexico, the Greenland Ice Sheet would raise global sea level by about 7 meters (22 feet) if it melted completely.

The journey of a thousand miles begins with one step.

We have only one U.N. soldier for every 250 square kilometers of territory.

We're probably 2.8 square miles, with 28 miles of coastline.

We have 45,000 square miles of geography in Ohio.