Image: (AP) Scientists have compiled the most comprehensive map yet of tectonic stress magnitudes across North America, highlighting regions most vulnerable to earthquakes. The map and associated ...

The fifth-largest lake in North America is also the continent's deepest ... which is accessible only by boat. These cold, clear waters are great for inshore boating and paddling.

The result was my 1981 book, “The Nine Nations of North America.” The reader reaction was astonishing. This map – drawn to anticipate the news – revealed something much deeper. It turned ...

In the long term, the map could inspire and inform modeling efforts aimed at better understanding North America's geologic past, as well as the continent's present day tectonic intricacies.