The Cosmic Magnets

Year - 2093, most parts of the world are now deserts while others are highly developed cities. There are hardly any forests left anywhere in the world. But one day, on 2nd Feb, 2093, some unknown magnetic poles seemed to fall from the outer space. These poles when came in contact with the earth's surface nourished the barren land into a tropical zone. Around 20 of them are found across the world. The origin of these cosmic magnets are still unknown.