This volume critically explores multiple posthuman possibilities in the 21st century and beyond. Due to the global engagement with advanced technology, we are witness to a species-wise blurring of boundaries at the edge of the human. On the one hand, we find ourselves in a digital age in which human identity is being transformed through networked technological intervention, a large part of our consciousness transferred to 'smart' external devices. On the other hand, we are assisted---or assailed---by an unprecedented proliferation of quasi-human substitutes and surrogates, forming a spectrum of humanoids with fuzzy borders. Under these conditions, critical posthumanism asks, who will occupy and control our planet: Will the 'superhuman' merely serve as another sign under which new regimes of dominance are spread across the earth? Or can we discover or invent technologies of existence to counter such dominance? These issues are at the heart of this exploration of the posthuman.<\\P>