1. By Gabriel Kenny

2. 1 st titanic The world's interest in the fascinating history of Titanic has endured for almost 100 years. April 15, 2005 will mark the 93rd anniversary of the sinking of the Titanic ship and although it has been nearly a century since the infamous luxury liner sank in the Atlantic Ocean, there continues to be a thirst for information regarding Titanic facts, myths and legends.

3. tsunami A tsunami is a series of ocean waves with very long wavelengths caused by large-scale disturbances of the ocean, such as: earthquakes landslide volcanic eruptions explosions meteorites

4. Oil spill An oil spill was occurred 2010 in mexico. All animals in the sea was affected like these. To many lost there lives

5. Hurricane Katrina DEVASTATING DAMAGE EXPECTED." By the time the National Weather Service issued this ominous alert on the morning of Aug. 28, 2005, Hurricane Katrina had morphed from a relatively weak Category 1 hurricane to a Category 5 tropical monster -- and was spiraling straight toward New Orleans.

6. The Big Burn The men who heroically fought the wildfire ripping through 3 million acres of Idaho and Montana, late in August 1910, were up against a formidable enemy. "The forests staggered, rocked, exploded and then shriveled under the holocaust," wrote local historian Betty Goodwin Spencer. "Great red balls of fire rolled up the mountainsides. Crown fires, from 1 to 10 miles wide, streaked with yellow and purple and scarlet, raced through treetops 150 feet from the ground."

7. Spanish Flu Pandemic Initially called "the three day fever," it started like any flu, with a cough and a headache, followed by intense chills and a fever that could quickly hit 104 degrees F. It could take a month before survivors felt completely well, and after they emerged from an energy-sapped stupor many said it felt as though they'd been aggressively hit with a club. But for those 650,000 Americans who actually died from the Spanish flu in 1918, the suffering was much worse.