For those of us with no real navigation experience, encountering longitude and latitude coordinates is usually the result of some hiccup using Google Maps. 40.722272, -73.994194? What? Where the heck ...

To pinpoint your position on a map of the world you need to work out your co-ordinates, known as latitude and longitude. Latitude is your position north or south of the Equator. Lines, or parallels, ...

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First a word of explanation; the 'tree line' marks the beginning of the 'Alpine Zone', the area where the climate is too harsh to permit tree growth. It varies in Washington state, ranging between ...