conservation

I've taken an interest in conservation and helping endangered species. I figure that it's our responsibility to help these animals because it is usually our fault they are endangered in the first place. I made this thread so we can share and inform each other of endangered species and ecosystems...

I was wondering. What do all you guys think about invasive species? Most of you would probably know about the damage a lot of non-native species have caused when they've been introduced into a new environment. Native ecosystems become degraded, species become extinct. But, whose fault is this...