The air was mostly nitrogen and carbon dioxide—scarcely a trace of
oxygen; life was rare here. But of course there was Mist in the air, the invisible
population of nanomachines and engineered bugs that infested the
atmosphere and oceans of every human planet. She stood still to let the
Mist suffuse her. Her bones and muscles tingled as they were strengthened
to cope with the heavy gravity, and the air she drew into her lungs fizzed
with oxygenation. The cold was kept out of her body, but she could taste
the salt-laden air in her mouth, the sharp, heavily salted tang of the global
sea.


- Transcendent, Chapter 6