Most national boundaries have more to do with politics than science, but researchers have discovered that the Canada-U.S. border has a geological basis that has divided the two countries for more than 100 million years. Scientists from the University of ...
Recent comments
5 years 32 weeks ago
14 years 49 weeks ago
14 years 50 weeks ago
14 years 50 weeks ago
15 years 15 weeks ago
15 years 15 weeks ago
15 years 22 weeks ago
15 years 40 weeks ago
16 years 22 weeks ago
16 years 22 weeks ago