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  Sludge falls into the Mississippi river. It is one of the most serious US disasters.
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  There is an earthquake in El Salvador. It is very hard on the people there.
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  NASA found ice on the planet Mars. They found the ice using the Mars Odyssey explorer spacecraft.
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  There was blackout in the US and Canada where about 60 million people lost electricity. It was one of the biggest blackouts in US history.
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  Hurricane Ivan hit Grenada. It was a category 3 hurricane when it hit.
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  Two trains come off the tracks in California.11 people were killed and 200 injured.
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  The planet Pluto is demoted to a dwarf planet. It was reclassified because it did not meet the 3 things that define a planet.
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  IPhone goes on sale. Millions of people line up to get the new iPhone.
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  A tornado hits Kentucky. It was classified as an EF-3 and killed 3 people.
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  An airplane flies into a pack of geese that shut down the engines. The pilot lands the airplane into the Hudson River.
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  The Minneapolis Metrodome’s roof collapses. The roof collapsed because of a 17in snowfall.
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  An earthquake near Japan caused a tsunami that killed many people.
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  Warm weather and dry conditions cause wild fires in California. These conditions make it hard to fight the fire.