The rifting began roughly 1.1 billion years ago due to tectonic forces pulling what is now the North American continent in opposite ... according to maps from a 2013 article in Nature — although ...

The U.S.-Canada border, as seen in this satellite map, mostly runs along the 49th ... is an important part of everyday life on the North American continent.” “It’s a real thing,” says ...

If you look at a map, they drew an artificial line right ... deep history and that it is an important part of everyday life on the North American continent." "It's a real thing," says Parmenter ...

If Yellowstone is dangerous now, it’s a cakewalk compared to the Pleistocene age where humans had to contend with mammoths, ...

The highway embodies the California promise of freedom. But it keeps breaking. A recent trip along the roadway revealed the ...

New World” and “Old World” are concepts still widely used to refer to the Western and Eastern Hemispheres, respectively, ...

He says the president's characterization of the border downplays "the fact that it has a complex, deep history and that it is an important part of everyday life on the North American continent." ...