I think GPs point is to keep them contained while in use, with a plan to keep them out of the environment once you're done with them. Batteries are a great exa

I think GPs point is to keep them contained while in use, with a plan to keep them out of the environment once you're done with them. Batteries are a great example. We really need good battery recycling. We also really need good batteries, since it looks like they'll play a major role in preventing catastrophic global warming.