At some point in the deep past, humans may have come frighteningly close to disappearing altogether. Here’s what we know, ...

Part I. Understanding extinction and introducing extinction accounting. Around the world in 80 species : what is mass extinction and can we stop it? / Jill Atkins and Barry Atkins -- How can ...

Musser argues humans have been living in a great knowledge-increasing, self-developing great progression for thousands of years, but humankind has never known where this progression should eventually ...