Ministry of Earth Sciences secretary Madhavan Nair Rajeevan said in Kolkata today that India has decided to replace the Maitri research station in Antarctica with a new one in the next three to four years.<br/><br/>The country is also drafting laws to safeguard its interest in Antarctica and is poised to expand its research activity in the coldest continent.<br/><br/>Speaking on the sidelines of a programme to formally commence ship building by Titagarh Wagons Ltd, he said India is poised to expand its research activity in the coldest continent and a new ship, with special ice-cutting facility, will be procured for the purpose.<br/>