The Tsar bomb, the most powerful atomic bomb tested, had more than 10 times the combined power of all the explosives used in WWII

1. On June 30th, 1908 a meteoroid or a comet fragment burst over the skies of Tunguska (Modern day Krasnoyarsk Krai, Russia). The object is believed to be about few tens of meters across. The explosion destroyed about 80 million trees covering 830 sq miles of land. The explosion is estimated to be about 1,000 times as powerful as the bomb that was dropped on Hiroshima.
2. The Tsar bomb was the most powerful atomic bomb ever test at 50 mega tons. It had more than 10 times the combined power of all the explosives used throughout WWII.