It's the land we love and the land we think we know. We see America's breathtaking landscapes and wildlife as timeless, but the truth is very different. Its unique geography drives the forces of nature to extremes, shaping and reshaping the land and throwing down new challenges for life.
本站所有视频和图片均来自互联网收集而来，版权归原创者所有，本网站只提供web页面服务，并不提供资源存储，也不参与录制、上传。