In 1961, while mapping rock exposures along the Colville River in Alaska, an oil company geologist would unknowingly find the evidence for a startling discovery. Long before the North Slope of Alask……続きを見る
We know by the calendar when spring officially begins, but how does nature tell us spring has come? In Heralds of Spring in Texas Roland H. Wauer walks us through Texas, from the Rio Grande to the P……続きを見る
