What rights do human beings have and why?
Guidelines:
1) Try to prevent your list of rights from being inherently conflicting. Example: "I think human beings should have the right to kill people, but also have the right not to be killed"
2) The US bill of rights might help get you started
3) Be sure not to forget the "why" portion of this - which is what makes this question difficult.
4) Be sure to examine the impact of your reasoning on whether animals also have rights.
I don't know if I'm just grossly oversimplifying this, or something, but I always understood the notion of "human rights" to be about keeping civil balance in society. Achieving an equilibrium between members of said society based on the (however "correct" or otherwise) underlying assertion that we are all of equal value, or at some level, fundamentally "the same".
The idea itself must have stemmed from (or aligned with) the realisation that there is simply no other way to go about co-existing. War is increasingly destructive and unstable (WWII, in my opinion, must've been a pivotal moment for the emergence of human rights). Having stepped back from the notion of superiority by force (or, the "animalia" approach), we probably gradually approached the idea that people could and should, in good conscience, be given the basic tools of existence and opportunity (which served to help level the playing field, and further human kind at an arguably more efficient rate). But of course, how well this has been followed over the years has been the subject of intense debate and criticism.
Therein, it's simply(!) a matter of dealing in absolutions, until context teaches us the greyscales of reality (and will continue to do so). For example, we would say that one human being has the right to life, unless that life threatens another. Or, a man's property is his own, UNLESS... So on and so forth.
So, what qualifies as a human right will complicate and evolve as society does. Hopefully, it'll be based on the same guiding principles, until reality irons them out in favour of greater awareness (if and when that occurs). This process, though, is subject to the whims of the political climate and its progess could well be bumpy.
Anyway, as an example, I point you to internet access, which I believe was ordained as a human right recently. So answers to the question of "what rights do human (and possibly animals) have?" will, in my understanding, complicate and multiply with time and context and would be very tough to answer in one post with any real conviction.
I'm afraid that's the best I can manage this close to bed; I hope I was able to contribute.