I was just wondering, if there any alternative of costly mining to save tons of machines running consuming ele 24*7 
is there any coin with no mining
? mining is also a form of politics as we are seeing in bitcoin cases..
is there any coin with no mining
? mining is also a form of politics as we are seeing in bitcoin cases..Yes. Proof of stake coins, like decreed or black coin. You lock a number of coins in and you get gas everytime they vote.