There's http://curecoin.us/ http://curecoin.us/ which hasn't been released yet but plans to make protein folding the proof of work and so help with research int

There's http://curecoin.us/ http://curecoin.us/ which hasn't been released yet but plans to make protein folding the proof of work and so help with research into cures for various diseases. Remember though that the usual crypto currency proof-of-work serves a purpose to verify transactions.