The issue of species dominance will dictate our global politics this century. Given the rate at which technologies are developing that enable "artilects"--artificial intellects--it is likely that humanity will be able to build artilects with mental capacities that are literally trillions upon trillions of times above the human level. Humanity will then have to choose whether to become the No. 2 species on the planet or not.
From Hal to Watson: The Future of Artificial Intelligence