While some experts say mum's the word when it comes to nanoproducts' environmental safety, others believe that cannot be good for the future of the technology.
Aside from global climate change, carbon dioxide emissions are contributing to another equally disturbing global problem: Ocean acidification — and its potential effects on marine ecosystems, especially coral reefs — has biologists very concerned.
A growing chorus of observers believes that nanotechnology needs better oversight, especially as it works its way into household staples like cosmetics and sunscreen.