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(from http://www.google.com/loon/faq/#pilot)

Q: WHAT STEPS IS PROJECT LOON TAKING TO BE ENVIRONMENTALLY RESPONSIBLE?

A: We are taking several steps to ensure Project Loon does not negatively impact the environment:

- We’re working to guide all balloons to collection points upon descent, so we can reuse, recycle, or dispose of the parts responsibly

- When balloons do not make it to one of these collection points, we will be offering a reward for reporting the location of the balloon so we can collect it

- We can track where the balloons land and we have a team of people who focus on recovering the balloons

- We'll have a boat for recovering balloons that go into the sea close to New Zealand

- We've started looking into using biodegradable films for our balloon envelopes

- Our balloons’ electronics are entirely solar powered.



"Our balloons’ electronics are entirely solar powered." I wonder if that means there won't be batteries. But no batteries would mean no service at night. Also, no navigation at night.

Pulling them out of the deep ocean would likely be infeasible. They might be able to make them float, though, and get them when they wash up on a beach somewhere.

Edit: there are some answers here: https://news.ycombinator.com/item?id=5887330 They do have batteries.




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