as always, very good, as good as his one on cotton.

but he didn't talk about one important topic: disposal of nuc waste. it's a crucial issue, without a good solution, anti-nuc voices won't quiet down.

like disposal of common trash, N waste is also causing more headaches. No regions like to be a dump ground for those dangerous materials, look at utah and nevada.

recycling and reusing look like the best choice.

france is the leader on these, china recently also reported "important" advance in this area (as always, such claims got "questioned"). but america and some other nations are not quite enthusiastic about recycling, mainly because of terrorism concern: the tech can be used to enrich nuc materials to make N-weapons.

yuan, if got time, might want to write more on this part, then his writing would look to be complete.