In January 2015, I had a paper published in the peer-reviewed journal of the Association for the Study of Ethical Behavior and Evolutionary Philosophy in Literature. The paper is titled "Bridging the Is-Ought Divide" and it's a bold essay proposing an objective and universal basis for morality. The conclusion of the paper can be summed up as:
Life wants to remain an is.
Therefore, life ought to act to remain alive.
By "life", I mean all of it over evolutionary timeframes. To understand more about this, and to see why this proposed solution solves David Hume's original formulation of the greatest problem in moral philosophy, I highly suggest reading my paper in its entirety. You may do so by following this link to read it on the web, or by downloading a free copy of the pdf from the link below. If you've read the paper and still have questions, you may also want to check out the lengthy FAQ page I've put together for it. Your question(s) may have already been addressed there.
This is a vitally important subject so I do hope these ideas get widely read and discussed. No matter how much you've read of what I've written, I'd be very happy to hear your thoughts on the matter too.