How the Earth Was Made premiered as a 90-minute do[展开]

　How the Earth Was Made remiered as a 90-minute documentary s ecial, narrated by Edward Herrmann, that aired on The History Channel on December 16, 2007, and focused on the geological history of Earth. &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ; &nbs ;The television series remiered on February 10, 2009. Each 45-minute e isode focuses on different geologic features and rocesses of the Earth. The first season, s anning 13 e isodes, concluded on May 5, 2009. The second season remiered on November 24, 2009. [收起]