In case you want to see an excellent report , type on google Coastal Action Network's report on Sethusamudram canal. The organisation is based in Chennai and Jesu Rathinam and Ossie Fernandes are the main architects of this report. They have argued with scientific method and on the whole it is very rational and very noteworthy report. They have not raised any Aryan Dravidian or religious issue. All must read this excellent report.