Also emphasized in this strategy is a more robust risk assessment component that incorporates product life cycle analysis and ethical, legal, and societal implications of nanotechnology.

WHITEHOUSE: Office of Science and Technology Policy Blog

CO2 is a colorless and odorless gas, exhaled at high concentrations by each of us, and a key component of the biosphere's life cycle.

WSJ: Sixteen Concerned Scientists: No Need to Panic About Global Warming