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Title
Author
Hits
Earthquake
Written by Julie
1871
Thunderstorms
Written by Julie
1939
Hurricanes
Written by Julie
1844
Tornadoes
Written by Julie
1826
Matter
Written by Julie
1785
Tsunami
Written by Julie
1842
Atomic Theory
Written by Julie
1989
Floods
Written by Julie
1757
Fire
Written by Julie
1782
Energy: Powering the World
Written by Julie
1742
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