The Philosophy Of Freedom (POF) answers the question of today's thinkers seeking evolutionary ethics that extends from the theory of evolution.
“The same Ethical Individualism which I have developed on the basis of the preceding principles, might be equally well developed on the basis of the theory of evolution.” Rudolf Steiner, Philosophy Of Freedom 12.7
Morality is human flourishing
Popular Atheist and islamophobe Sam Harris gave a Ted talk about a science of ethics based on the "facts" of human flourishing. What was missing is that Sam didn't have these facts.
Science of freedom
The highest human flourishing is freedom, unique to humans. A science of ethics must be a science of freedom.
Atheists should embrace a science of freedom (The Philosophy Of Freedom), from there a new ethics can grow to include everyone else.