New Delhi’s Iron Pillar has long fascinated scientists both at home and abroad. But it wasn’t until 2003 that experts cracked the metallurgical mystery behind this unusual attraction.

By Poonam Binayak, CNN (CNN) — Can an iron structure stand tall for 1,600 years without rusting, despite being exposed to the elements? It seems implausible, considering the supposed lack of ...

It’s 1600 years old. It’s made of wrought iron. It stands pristine amid the ruins of an ancient temple. And it refuses to rust. The origin of the remarkable Iron Pillar, part of the world ...

(CNN) — Can an iron structure stand tall for 1,600 years without rusting, despite being exposed to the elements? It seems implausible, considering the supposed lack of technology at the time of ...

(CNN) — Can an iron structure stand tall for 1,600 years without rusting, despite being exposed to the elements? It seems implausible, considering the supposed lack of technology at the time of ...

By Poonam Binayak, CNN (CNN) — Can an iron structure stand tall for 1,600 years without rusting, despite being exposed to the elements?It seems ...

New Delhi’s Iron Pillar has long fascinated scientists both at home and abroad. But it wasn’t until 2003 that experts cracked the metallurgical mystery behind this unusual attraction.