Hurricane Katrina #1
Science Source
Horse-drawn Fire Truck, C. 1890s-1900s
H. Armstrong Roberts/ClassicStock
Mount St. Helens Eruption, 1980
Science Source
Explosion Of The Space Shuttle
NASA Science Source
The Old Man Of The Mountain
Larry Landolfi
Dust Bowl Of The 1930s, Elkhart, Kansas
Science Source
Hurricane Katrina #2
Science Source
Dust Storm 1930s #3
Omikron
Space Shuttle Challenger Disaster #1
NASA Science Source
Green Acid Lake, Mount Pinatubo
Stephen & Donna O'Meara
Rhode Island Flood 2010
Science Source
Tulsa Race Riot, 1921
Science Source
Disaster Earth Stairs Cloud
Mike Agliolo
Deepwater Horizon Fire, April 21, 2010 #2
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Rms Titanic Sinking, 1912
Science Source
Needle-like Cone Tornado
Jason Persoff Stormdoctor
Hurricane Katrina #4
Science Source
Great Mississippi Flood, 1927
Library of Congress
Kilauea Volcano #1
Stephen & Donna O'Meara
Eruption Of Mount St. Helens
Science Source
Superstorm Sandy
Science Source
Challenger Explosion
Mark D. Phillips
Multiple Vortex Tornado, Oklahoma, 1982
Howard Bluestein
Indonesia Most Active Volcano Mt
Universal Images Group
The Great Boston Fire Of 1872
Getty Research Institute
Stromboli Volcano
Stephen & Donna O'Meara
Arenal Volcano Erupting #1
Gregory G. Dimijian
Public Health Warning, 1918
Science Source
Influenza Pandemic, 1918
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Before And After Hurricane Camille 1969
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Hurricane Damage, Galveston, 1900 #2
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Burning Of The Royal Library
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Lightning Starts a Fire
David R Frazier and Photo Researchers
New England Hurricane, 1938
Science Source
Repairing Mississippi Levee, 1903
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1906 San Francisco Earthquake Fire
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Dakota Farmer, Dust Bowl, 1935
Science Source
Hurricane Damage, Galveston, 1900
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Apollo 13 Recovery Swimmers
Nasa
Johnstown Flood, 1889
Science Source
Great Fire Of London, 1666 #2
Photo Researchers
Mount St Helens Eruption
Usgs
Krakatoa Eruption, 1883
Science Source
Mount St. Helens Eruption, 1980 #1
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Hurricane Irma Damage, Bobcat Tractor #1
Millard H. Sharp
Hurricane Katrina Damage
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Garden City, Dust Storm Sequence, 1
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Hiroshima #2
Photo Researchers
Meteorite Hitting Earth #1
Mike Agliolo
Kilauea Volcano #4
Stephen & Donna O'Meara
Cyanobacteria, Fl
Charles Angelo
Remember The Lusitania Wwi Enlistment
Photo Researchers
Sandstorm, Sudan, 1906 #3
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Tunguska Event, 1908 #1
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Texas Dust Storm, 1935
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Launch Of Space Shuttle Challenger 51-l
NASA Science Source
Lisbon Tsunami, 1755 #2
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Lusitania Hit By Torpedo, 1915
Photo Researchers
Hurricane In Palm Beach
Omikron
Hurricane Carol
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Predicted Effects Of Hurricane Camille
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Titanic Crew Survivors
Spl
Hurricane Katrina #8
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Hurricane Isaac In The Gulf Of Mexico
NASA GOES Project
Mrs. Olearys Cow, The Great Chicago
Photo Researchers
The Great Chicago Fire, 1871 #6
Photo Researchers
The Great Chicago Fire, 1871 #7
Photo Researchers
Hurricane Wilma
Planet Observer
Artifacts From Vesuvius Eruption #1
Catherine Ursillo