The World Wildlife Foundation also has a very professional website with a multitude of information in the form of News articles and interesting facts. There are many cool photos of Nature and unfortunately of the misuse of it by humanity. Like the Oxfam site you can subscribe for a free monthly newsletter to see what new causes and case studies are on the agenda. Reading these can make you a little sad but there is usually at least an equal amount of positive stories about progress from the hard work done. I like reading these newsletters more than current affairs articles that usually have only a couple 'happy' stories that are often just silly and irrelevant (though I do think having a laugh after all the death and chaos is better than nothing).

So check out some of these sites, they may help to redeem your faith in humanity as well as remind you of the bigger picture that you are part of. In seeing the wider perspective you may just realize that you can make a difference.