Fairly self-explanatory. I know that not everyone is convinced petitions are actually impactful, but this is an area where I take the point of view that while they may not be, doing nothing is definitely not impactful.
Looking a little further into this issue, I came across the following blurb:
New DNA tests on illegal ivory have revealed elephant-poaching hot spots. Now scientists hope police will be able to catch the crooks responsible and halt the decline of elephant numbers.
Interesting. More about this process and it's impact can be found here.