NEWS--Researchers have reconstructed atmospheric carbon dioxide levels over the past 2.1 million years in the sharpest detail yet, shedding new light on its role in the earth's cycles of cooling and warming. A first-ever analysis and comparison of the carbon footprints of different countries using a single, trade-linked model has been created by researchers at the Norwegian University of Science and Technology (NTNU) and the Centre of International Climate and Environment Research - Oslo (CICERO). ScienceDaily (June 22, 2009) — Some of the substances that are helping to avert the destruction of the ozone layer could increasingly contribute to climate warming, according to scientists from NOAA's Earth System Research Laboratory and their colleagues in a new study in the journal Proceedings of the National Academy of Sciences.

Flood

Natural Disasters - Flood

Floods are caused by too much rain or water in a location. Many reasons could lead to a flood, including prolonged rainfall from a storm, thunderstorms, rapid melting of snow, overflowing rivers from excess rain, bursting of man-made dams or levees.

Generally, occurrences of floods are more frequent in low-lying land. Some plains may periodically flood; known as a flood plain. Ancient Egypt relied on these floods for agriculture.

Monsoon rainfalls can also cause floods, such as in Bangladesh due to extended periods of rainfall.

Volcanic eruptions can cause melting of ice and snow quickly- therefore flood a plane.

Hurricanes and tsunami's are also included.

To prepare for a flood, huge mechanical barriers can be used to protect the water from flowing across the flood-prone areas such as those prepared in London's River Thames, Venice, and Netherlands.

Examples:

Huang He in China
Great Flood in 1931

Flooding in Asheville, North Carolina in July 1916

Flooding caused by Hurricane Wilma in the Florida Keys.

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NEWS--Researchers have reconstructed atmospheric carbon dioxide levels over the past 2.1 million years in the sharpest detail yet, shedding new light on its role in the earth's cycles of cooling and warming. A first-ever analysis and comparison of the carbon footprints of different countries using a single, trade-linked model has been created by researchers at the Norwegian University of Science and Technology (NTNU) and the Centre of International Climate and Environment Research - Oslo (CICERO). ScienceDaily (June 22, 2009) — Some of the substances that are helping to avert the destruction of the ozone layer could increasingly contribute to climate warming, according to scientists from NOAA's Earth System Research Laboratory and their colleagues in a new study in the journal Proceedings of the National Academy of Sciences.