Maybe its just a wack job scientist, but still an interesting read.
[b]In his further comment to MosNews, Lavbin noted that according to his calculations, the mass of the space object that collided with the Earth in 1908 amounted to almost 1 billion tons and the blast on impact must have destroyed the humanity. The fact that it did not happen testifies to the theory that the Tunguska event was an explosion of an artificial object at an altitude of about 10 kilometers.
“I am fully confident and I can make an official statement that we were saved by some forces of a superior civilization,” the scientist said. “They exploded this enormous meteorite that headed towards us with enormous speed,” he said. Now this great object that caused the meteorite to explode is found at last. We will continue our research, he said. [/b]
Sounds like the aliens are friendly though.