IIT team solves the Ashoka pillar mystery

So finally, a team from IIT Kanpur solves the Ashoka pillar mystery. The Ashoka pillar is a 4th century iron pillar, attributed to the ancient King Ashoka, that has resisted rusting for all these years. Currently located in Delhi near the Qutab Minar, people have attributed the non-corrosive nature of the monument to all sorts of reasons - even some crazy ideas like extra-terrestrial influence as proposed in Von Daniken's 'Chariot of the Gods'.