The Vortex is a collage of selfless acts to help victims of the Bhola cyclone and the Liberation War of Bangladesh in 1971.

The Bhola cyclone of 1970 changed the course of Pakistan's history. To know more about the devastating cyclone and its aftermath, watch Star Explains.

Fifty-two years ago today, a terrible cyclone and the resultant tidal surges claimed the lives of nearly 500,000 people in the country’s coastal districts, including Bhola, and caused extensive damage.