In the next generation, our warfighters may be able to eat grass,communicate telepathically,resist stress, climb walls like a lizard, and much more. Impossible? We only need to look at nature for proofs of concept. For instance, dolphins don't sleep (or they'd drown); Alaskan sled-dogs can run for days without rest or food; bats navigate with echolocation; and goats will eat pretty much anything. Find out how they work, and maybe we can replicate that in humans.
As you might expect, there are serious moral and legal risks to consider on this path. Last week in the UK, The Royal Society released its report " Neuroscience, Conflict and Security." This timely report worried about risks posed by cognitive enhancements to military personnel, as well as whether new nonlethal tactics, such as directed energy weapons, could violate either the Biological or Chemical Weapons Conventions.
While an excellent start, the report doesn't go far enough, as I have been explaining to the US intelligence community , National Research Council, DARPA, and other organizations internationally. The impact of neural and physical human enhancements is more far-reaching than that, such as to the question of torturing the enhanced. Other issues, as described below, pose real challenges to military policies and broader society.