Watch Journey to Planet Earth: Seas of Grass

Shows the devastating environmental, political, and economic effects of the degradation of the world's grasslands, which make up 30 percent of Earth's land surface. Case studies illustrate the complex relationship between burning, livestock grazing, reduction in species diversity and the conversion of grassland to farmland or desert and poverty, disease, and loss of habitat.

Journey to Planet Earth: Seas of Grass is a 2004 documentary with a runtime of 56 hours.