 
			     
   Secure Scanned : 10/31/2025
				     Secure Scanned : 10/31/2025
                    
                    
                 
							Horizon 1966 -
Overview:Europe's heritage of pictures, statues, and buildings is being destroyed at a frightening rate by atmospheric pollution, but an American scientist has just invented a method of preserving limestone. In 1908, a vast explosion shook the Tungus district of Siberia: was it due to the biggest meteorite ever to hit the earth, or something odder?





 
								
								
							
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