"Using data for 25,780 species categorized on the International Union for Conservation of Nature Red List, we present an assessment of the status of the world's vertebrates. One-fifth of species are classified as Threatened, and we show that this figure is increasing: On average, 52 species of mammals, birds, and amphibians move one category closer to extinction each year. However, this overall pattern conceals the impact of conservation successes, and we show that the rate of deterioration would have been at least one-fifth again as much in the absence of these. Nonetheless, current conservation efforts remain insufficient to offset the main drivers of biodiversity loss in these groups: agricultural expansion, logging, overexploitation, and invasive alien species. "
Scientists have identified the 20 most important regions of the world's oceans and lakes that are key to ensuring the survival of the planet's marine mammals such as seals and porpoises. Their analysis also shows, however, that most of these areas are already under pressure from human impacts such as pollution and shipping.
"A free, searchable catalog of standards-based science teaching materials fro K-12 educators and learners. The database can be browsed by topic or searched by keyword. The site also contains Special Collections - groups of resources organized around themes, such as Climate Change and Mammals."