Hey brain stuff, I'm Jonathan Strickland. So, you've probably seen geographic coordinates like these before, maybe on a GPS device or maybe scrawled in a mysterious note you found in the glove of a rental car. But if you never knew exactly what they meant, fear not. It's actually pretty simple, and we are here to make it all clear. When you see a set of geographic coordinates looking like this or like this, you're reading latitude and longitude. Latitude represents north-south location, and longitude represents east-west location, usually listed in that order. By combining them, you can pinpoint any spot on the surface of the earth. These coordinates aren't expressed in units of distance, but in degrees. Why? Because the earth is no sphere. Imagine a line running from the equator to the center of the earth, and then another line running from the center of the earth to the North or South Pole. These two lines make a 90-degree angle. All latitudes in each hemisphere can be represented by drawing a third line somewhere between them. So, the equator would have zero degrees latitude, and the North Pole would have 90 degrees north latitude. And a location halfway between the North Pole and the equator would lie at 45 degrees north. Same thing for the southern hemisphere, except you call it degrees south. For more precision, each degree of the Earth's surface is divided evenly into 60 minutes, and each minute is divided into 60 seconds. If you need to get even more specific, you can just add decimals to your seconds. Alternatively, you can write the whole coordinate in decimal notation. To do this, you have to convert minutes and seconds, which are base 60, into our regular base 10 counting system by dividing each unit by...