By Train from New York to Paris!

Join Russia and USA by Rail Tunnels under the Bering Strait? « Russia Watch

A fascinating, if somewhat unlikely project. Visit the link for additional maps showing the proposed Bering Strait tunnel and what it would take to link the rail systems of Russia, the US, and Canada.

19 Trillion Maps!

All of the ways to make a map of the United States with four colors / fake is the new real

According to the four color theorem, you only need four different colors to color any map so that no two adjacent regions have the same color. Every time you refresh the map at the link, you'll see a different four color solution for the United States.

12 Maps That Changed the World!

12 Maps That Changed the World - Uri Friedman - The Atlantic

A fascinating article at the link, with a nice assortment of historical maps.

Escape From New York!

How Far You Can Travel From New York City in a Day - David Yanofsky - The Atlantic

You can also look at some fascinating historical maps on the topic by visiting Atlas of the Historical Geography of the United States, specifically here.

Carbon Footprint Maps

New! Carbon Footprint Maps | CoolClimate Network

At the link, you'll find several interactive maps that allow you to look at any particular zip code. This is annual average household carbon footprint by zip code. Also at the link are average household energy carbon footprint by zip code and average vehicle miles driven by zip code.