The United Nations declared 2010 the International Year of Biodiversity. In this link you can, for instance, find information about the animal species which are in the Red List, that is, in inmiment danger of extinction. On the positive side, you can also find, for example, a long list of successful stories of communities, governments or organisations which have managed to reach some of the targets of the Biodiversity Project.
Year 2011 was declared the International Year of Forests. Again, you can find in the webpage of the United Nations lots of information about forests and the people who are working on sustainable ways of using them.