We clarify the definition and interpretation of sustainability economicsʺ (Baumgärtner and Quaas, 2010) in response to recent comments by van den Bergh (2010), Bartelmus (2010) and others. For that sake, we distinguish between general and specific definitions of sustainability and...

Both natural and cultural selection played an important role in shaping human evolution. Since cultural change can itself be regarded as evolutionary, a process of gene-culture coevolution is operative. The study of human evolution - in past, present and future - is therefore not restricted to...