adelcrow wrote on May 19
th, 2011 at 8:43pm:
Renewable energy is progressing and it will keep progressing.
I am betting we will look back in 20 yrs time and wonder what all the fuss was about
I am positive about the future and our excelleration away from dirty polluting fossil fuels.
It only takes a few huge break throughs and the dam walls will break..its been the same all throughout human history.
Dirty polluting fossil fuels...what about dirty polluting solar cells made of polysilicon, itself toxic, but in making it and disposing of it are both highly environmentally harmful.
It produces nitrogen trifluoride, silicon tetrachloride, arsenic, cadmium, etc.
Nitrogen trifluoride is 17,200 times more potent greenhouse gas than that nasty old CO2 produced by burning fossil fuels and has an estimated life in the atmosphere of 740 years.
To produce one ton of polysilicon produces 4 tonnes of liquid waste. In China this is being dumped in fields...not blooming marvelous because it is highly toxic to plant life.
If you get a free meal someone else is paying for it.