Recent years have seen a surge of attention to the question, does Judaism endorse natural law? At first glance, this seems like a purely theoretical question. In fact, however, this issue carries profound implications for the extent to which, over and above Jewish texts, our natural instincts ought frame our behaviors. I have compiled a summary of some of the primary and secondary sources on the topic, which you can find here.
Please feel free to send more sources and comments in my direction!