The world climate is changing. The question wich we do every day is “Why is it happening?”
Most scientists say that the cause is human activities that induce greenhouse gas emissions. Greenhouse and global warming are the most worrying problems for our planet Earth. The high emission of greenhouse gases leads to a remarkable climate change.
After several studies, the experts concluded that the increase of typhoons and cyclones is caused by a warming of the oceans in recent decades. Most devastating hurricanes have occurred after 1900 causing many deaths. Evidences of this are many in recent year:
10 tropical cyclones in Japan in year 2004,
cyclones Gafilo in Madagascar,
cyclones larry in Australia,
cyclones Saomi in China,
a lot of seasonal tropical cyclones in the Atlantic between 2004 and 2005, including Hurricane Katrina which caused catastrophic consequences socio-economic status.
In Italy changing climate is also evident. Earthquakes occur more frequently in the last 20 years than before. We must remember the eartquakes in Sicilia in december 1990 (force magnitude 7), in Umbria in september 1997 (force magnitude 5), in Molise in october 2002 (force magnitude 5), and one in Abruzzo in april 2009 (force magnitude 6). Although deaths are decreased, an earthquake remains a really scary phenomenon for people. In addition to earthquakes, floods have increased in Italy (they there have also been recently). The climate in Italy is changing really quickly: the winter is more hot than past years and mid-seasons are disappearing.
Humanity should reduce greenhouse gas emissions. Countries that emit more greenhouse gases are North American (many gases are emit by USA) and Asia (the majority is emit by China), next follow Europe.
In Italy greenhouse gas emission is caused by transport and industry for the majority.