I've been doing a little reading on lithium mining, and I've found mostly good news. It turns out that many environmentalists do approve of lithium mining, despite the fact that it can cause some environmental damage. In order to mine lithium, miners just pump up underground brine and filter the brine for valuable elements like lithium. It requires some energy, some water, and can be hazardous for workers if precautions are not taken.
On the other hand, it's generally the most environmentally friendly mining process. Other than the small amount of resources used to process the brine, it doesn't leave a huge ecological footprint behind. Even the brine itself gets injected back into the ground where it was extracted from.
Also, lithium is recyclable. Hopefully, consumers actually do recycle their lithium batteries, since the metals inside lithium batteries can actually pollute water sources and pose a health hazard.
http://www.downtoearthnw.com/blogs/down-earth/2010/jan/
28/lithium-mining-cleaner-coal/http://blog.betterplace.com/2009/12/the-truth-about-lit
hium-abundant-and-recyclable/http://blogs.computerworld.com/node/3285