An ecologically realistic 24-year field study of grasslands showed that elevated levels of carbon dioxide nearly tripled species losses attributed to nitrogen pollution.
Biologists estimate that there should be 3,000 adult ferrets in the wild to successfully recover this endangered species. To protect and restore iconic grassland landscapes, World Wildlife Fund and ...
North America’s grasslands consist of tallgrass, mixed grass and shortgrass prairie. Through expansion, 70 percent of our native grasslands have been converted to crops and pasture. Wildlife has ...