Geo-Joint: Longest Borders

Longest Borders

As with almost every geographic “biggest” or “longest”, there are seven different ways to tabulate the results. The longest border between two countries would seem to be that between the U.S. and Canada. In total, it’s about 5,526 miles.

Geo-Joint: Longest Borders

Longest Borders

As with almost every geographic “biggest” or “longest”, there are seven different ways to tabulate the results. The longest border between two countries would seem to be that between the U.S. and Canada. In total, it’s about 5,526 miles.

Geo-Joint: Lake Missoula

Lake Missoula

This is the story of a big deal with a big footprint. During the end of the last Ice Age in North America, starting around 20,000 years ago, glaciers would advance and retreat with global temperature changes.

Geo-Joint: Moonbows

Moonbows

It takes a special set of circumstances: rain, of course, with some clearing for the rays of a low-angled moon coming from a direction opposite the rain, a dark sky, plus the added requirement of a moon in full or nearly-full phase.

Geo-Joint: Giant Ash

Ash

Growing tall gives a tree the edge on capturing sunlight before some other tree shades it out. But the taller it gets, the harder it is for water to get drawn up all the way to the top.

Geo-Joint: Arctic “Land Rush”

Arctic

With the exception of the Inuit and other hardy souls of the Far North, the deep Arctic stood as a formidable outland for centuries and even the bravest non-natives only utilized its periphery for fish and furs from the resident four-legged or flippered animals.

Geo-Joint: The Rainmaker

Rainmaker

A hundred years ago those familiar drought conditions were plaguing San Diego. In 1915, San Diego was a small but growing city and its water needs were also growing. The rainfall records of that year don’t indicate severe drought conditions, and in fact by year’s end there was even more rain than average. But the city fathers were concerned about future needs and were looking for ways to increase the amount of stored water.

Geo-Joint: Lake Mead’s Third Straw

Lake Mead

The project was informally called The Third Straw. All it took was drilling a 24-foot diameter tunnel through three miles of rock underneath the bottom of Lake Mead. Piece of cake. It did, however, take three years to eat it. The hydraulics of this scheme are, of course, complex, but they went more or less as follows.

Geo-Joint: Chernobyl and the Red Forest

Red Forest

There are residents of the exclusion zone who never left. Those would be the plants and animals whose ancestors had lived there for thousands of years and didn’t get the memo that the place was now glowing with radiation.