Advertisement Mexico City: An enormous iceberg is heading toward South Georgia Island in the southern Atlantic, where scientists say a collision could devastate wildlife by threatening the food chain. Scientists have long been watching this climate-related event unfold, as the iceberg - the size and shape of Jamaica – has meandered and advanced over two years since breaking off from the Antarctic peninsula in July 2017. The peninsula is one of the fastest-warming places on Earth, registering a record high temperature of 20.75 degrees Celsius on February 9. The warming has scientists concerned about ice melt and collapse leading to higher sea levels worldwide.