One hundred years ago, on June 30th, 1908, the Tunguska Event took place in Russia as an asteroid exploded above Siberia, leaving 800 square miles of scorched or blown-down trees.



The Tunguska explosion (or Tunguska event), was a massive explosion that occurred near the Tunguska River in what is now Krasnoyarsk Krai of Russia, at 7:40 AM on June 30, 1908.

this extract contains film of a re-creation of the blast patterns, interviews with various scientists, and opens with possible scenario of it happening to New York City.

clips of interviews with Dr. Kevin Zahnle and Dr. David Morrison.