http://researcher.watson.ibm.com/researcher/view_group.php?id=5047 http://researcher.watson.ibm.com/researcher/view_group.php?i... Looks like water costs $2 /

http://researcher.watson.ibm.com/researcher/view_group.php?id=5047 http://researcher.watson.ibm.com/researcher/view_group.php?i... Looks like water costs $2 / cubic meter, and oil costs 100x more than that, so we have a long way to go before this makes any sense.