The local farmers call it a flood; an inundation that happens every 50 years.
Others believe it to be an act of God, an inevitability.
It isn't water flooding the precious farmland in north-eastern India, but rats.
A once in a generation, gigantic plague of rats, that ruins crops and leaves people starving.
A rat army so big, so mythical, that until now some scientists did not believe it was real. More...