On 26/09/2014 10:47, Tim Streater wrote:
....
As glass is quite stable and is not likely to be eroded or damaged
until the planet melts in 500 million years time, it could just be left
to itself. The obvious answer is indeed to put it in an ocean trench,
where over aeons it will be subducted into the mantle, to join all the
other radioactive material that's already there.

Unfortunately, there are international treaties that prohibit doing that.


--
Colin Bignell