CONCEPT OF GLOBAL WARMING

Global warming and climate change refer to an increase in average global temperatures. Natural events and human activities are believed to be contributing to increases in average global temperatures. This is mainly caused by the increase in greenhouse gases such as CO2, CH4.N20 and CFCs. Climate change affects all regions of the world. 

Polar ice sheets are melting and sea levels are rising. Some regions experience more extreme weather events and rainfall, while others experience more extreme heat waves and droughts. These impacts are expected to increase in the coming decades. expected to have a number of impacts on the oceans. 

Current impacts include sea level rise due to thermal expansion and melting of glaciers and ice sheets, and warming of the sea surface, leading to further temperature stratification. Another impact is changing ecosystems and habitats, as weather patterns change rapidly, terrestrial and marine habitats change, making them inhospitable to some species while others move in and take over. In some cases, entire ecosystems are in danger of collapsing. Heating is slowing down.

Depending on the sea ice, the animal uses it as a floating platform to catch prey. Experts believe that Arctic sea ice is melting at a rate of 9% per decade, threatening polar bear habitat and existence

Increasingly intense economic activities are triggering a variety of world environmental risks to health and well-being of unprecedented scale and of a general nature. global climate change is a burgeoning reality. the worldwide mean surface temperature has redoubled by 0.74±0.18°C over the last one hundred years, whereas the global average water level has up by 1.8 metric linear unit each year since 1961, and Arctic sea ice is shrinking by 2.7±0.6% per decade. In addition, the ocean surface temperature is rising, mountain glaciers are receding at increasing rates, surface ocean waters have gotten additional acidic and more frequent extreme weather events are observed. Human beings are exposed to climate change through dynamic weather patterns (for example more intense and frequent extreme events) and indirectly through changes in water, air, food quality and quantity, system functions, agriculture conjointly the} economy. Today, it's sure that global climate change contributes to the worldwide burden of disease and premature deaths. rising proof of the results of climate change on human health show that climate change has not solely altered the distribution of some communicable disease vectors and the seasonal distribution of some matter spore species, however has also redoubled the chance of heat-wave-related deaths. within the future, exposure to the effects of climate change is probably going to guide to varied trends related to human health, akin to a rise in undernutrition globally and within the range of people littered with diseases and injuries directly involving heat-waves, floods, storms, fires and drought. The incidence of diarrheic diseases and also the frequency of cardiopulmonary diseases as a result of upper concentrations of ground level gas also are possible to increase. global climate change is expected to own mixed effects on infectious diseases, and may bring some advantages to health, throug

h, for example, fewer deaths from exposure to the cold. However, this is often expected to be outweighed by the negative effects of rising temperatures worldwide, especially in developing countries (Confalonieri et al., 2007). The quandary with global climate change is that it's totally different from several of the opposite sorts of environmental exposures: all countries within the world are have an effect oned; it is expected to become more acute over future decades, even with greenhouse emission emissions stabilising at year 2000 levels – and so youngsters are those most affected; it plays a crucial role in the spacial and temporal distribution of infectious illnesss and thus will affect health security; the results are unequally distributed and are notably severe in countries with already high disease burdens or in populations with low adaptational capacity; and also the effects are extremely complicated and will involve a number of processes, developments, sectors and activities. 

Furthermore, recent events have incontestible that populations and health systems could also be unable to upset will increase within the frequency and intensity of maximum weather events. These events will cut back the resilience of communities, affect vulnerable regions and localities and overwhelm the header capacities of most societies. This could be a preliminary analysis report, victimisation international and national literature and with the helpof knowledgeable advice. The aim was to assess the potential risks of global climate change to human health in Italy, to examine what preventive actions are offered and to counsel what could be additionally