Lead free/leaded solder comparison Lead Free Solder (Sn/Ag/Cu) Sn63/Pb37 (Leaded Solder) Melting Point 217-221 º C (422.6 - 429.8 º F) 183 º C (361.4 º F)
Given that my last reel of solder has lasted me 30 years, I don't feel too 'un-green'.
Lead is not the boogey-man some have made it out to be. Don't ingest it and there are no problems. This amounts to having the brains to wash your hands before eating and not letting kids gnaw on it.
I find it quite ironic that allegedly "green" groups are pushing CFLs, which contain mercury which is a problem, quite mobile once it gets loose in the environment, etc.