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Air is an essential component for life on Earth because it contains the oxygen that is necessary for living organisms to breathe. The air completely surrounds the Earth and literally wraps it up in a shroud that, under the effect of gravity and centrifugal force caused by the Earth’s rotation, takes a spheroid shape (think of the shape of an egg), flatter at the poles and bulging at the Equator. This is why, even if its boundaries with the interplanetary spaces cannot be accurately identified, it has been called atmosphere (from the Greek atmòs = steam, and sfaira = sphere). Atmosphere acts as a filter against harmful radiations from the Sun, by reflecting them and preventing them from reaching the ground, and it allows the Earth’s surface to remain at a temperature that is suitable for the life of plants and animals. The atmosphere is also the zone of the principal meteorological phenomena (wind, rain, snow, etc.) which, together, form the climate.

subjects dealt with in Air knowledge

What it is

The air we breathe consists of a mixture of gases and solid and liquid particles. Its composition is not constant,…

Atmosphere

The air completely surrounds the Earth and literally wraps it up in a shroud that, under the effect of gravity…

special reports

  • 10 May 2008 / Air

    Bioindicators

    Monitoring the environment Ecologic research is more and more oriented towards an assessment of the quality of the environment and…

    7 November 2008 / Air

    Lightning

    Help! a storm! Man has always been afraid of lightning, in fact in the past lightning was considered a sign…

    7 July 2010 / Air

    What is the weather like?

    On a summer day On a beautiful, sunny summer day you may plan to spend the day out of town,…

  • 15 April 2007 / Air

    Climate and dynasties

    Scientific research Far worse than Attila the Hun, the true calamity that has led to the fall of flourishing civilizations…

    11 December 2013 / Air

    Typhoons, hurricanes and cyclones

    The typhoon in the Philippines and the flood in Sardinia On November 8, 2013 typhoon Haiyan hit the Philippines with…

    7 January 2006 / Air

    In the eye of the cyclone

    A year of studies Recent studies confirm that the warming of the atmosphere causes an increase in the temperature of…

  • 23 October 2013 / Air

    Carbon Footprint

    CO2 emissions and lifestyles If your parents decide to buy a new car, they might be attracted by a car…

    29 April 2014 / Air

    What will the climate be like?

    Fiction vs reality In a famous scene of The day after tomorrow1, the paleoclimatologist Jack Hall presents the results of…

    30 May 2014 / Air

    Latest news regarding the climate

    Polar temperatures in the USA, days in March that are almost like summer, extremely violent typhoons ... global climate seems…

  • 29 January 2013 / Air

    Rio+20: The future we want?

    Rio+20: expectations and disappointment The appointment that we were so looking forward to, of the international conference on sustainable development,…

    27 March 2012 / Air

    Rio and the Conventions

    The history of climate negotiations In the past years we have heard  and read a lot about climate change. The…

    20 January 2012 / Air

    From Rio to Rio+20

    20 years after Rio In June this year, in Rio de Janeiro, the world conference on sustainable development will be…

  • 10 May 2008 / Air

    Bioindicators

    Monitoring the environment Ecologic research is more and more oriented towards an assessment of the quality of the environment and…

    7 November 2008 / Air

    Lightning

    Help! a storm! Man has always been afraid of lightning, in fact in the past lightning was considered a sign…

  • 7 July 2010 / Air

    What is the weather like?

    On a summer day On a beautiful, sunny summer day you may plan to spend the day out of town,…

    15 April 2007 / Air

    Climate and dynasties

    Scientific research Far worse than Attila the Hun, the true calamity that has led to the fall of flourishing civilizations…

  • 11 December 2013 / Air

    Typhoons, hurricanes and cyclones

    The typhoon in the Philippines and the flood in Sardinia On November 8, 2013 typhoon Haiyan hit the Philippines with…

    7 January 2006 / Air

    In the eye of the cyclone

    A year of studies Recent studies confirm that the warming of the atmosphere causes an increase in the temperature of…

  • 23 October 2013 / Air

    Carbon Footprint

    CO2 emissions and lifestyles If your parents decide to buy a new car, they might be attracted by a car…

    29 April 2014 / Air

    What will the climate be like?

    Fiction vs reality In a famous scene of The day after tomorrow1, the paleoclimatologist Jack Hall presents the results of…

  • 30 May 2014 / Air

    Latest news regarding the climate

    Polar temperatures in the USA, days in March that are almost like summer, extremely violent typhoons ... global climate seems…

  • 10 May 2008 / Air

    Bioindicators

    Monitoring the environment Ecologic research is more and more oriented towards an assessment of the quality of the environment and…

  • 7 November 2008 / Air

    Lightning

    Help! a storm! Man has always been afraid of lightning, in fact in the past lightning was considered a sign…

  • 7 July 2010 / Air

    What is the weather like?

    On a summer day On a beautiful, sunny summer day you may plan to spend the day out of town,…

  • 15 April 2007 / Air

    Climate and dynasties

    Scientific research Far worse than Attila the Hun, the true calamity that has led to the fall of flourishing civilizations…

  • 11 December 2013 / Air

    Typhoons, hurricanes and cyclones

    The typhoon in the Philippines and the flood in Sardinia On November 8, 2013 typhoon Haiyan hit the Philippines with…

  • 7 January 2006 / Air

    In the eye of the cyclone

    A year of studies Recent studies confirm that the warming of the atmosphere causes an increase in the temperature of…

  • 23 October 2013 / Air

    Carbon Footprint

    CO2 emissions and lifestyles If your parents decide to buy a new car, they might be attracted by a car…

  • 29 April 2014 / Air

    What will the climate be like?

    Fiction vs reality In a famous scene of The day after tomorrow1, the paleoclimatologist Jack Hall presents the results of…

  • 30 May 2014 / Air

    Latest news regarding the climate

    Polar temperatures in the USA, days in March that are almost like summer, extremely violent typhoons ... global climate seems…

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