Air pollution occurs when chemical, physical or biological substances alter the natural characteristics of the atmosphere, potentially leading to respiratory and other diseases that can be lethal.
The International Agency for Research on Cancer (IARC) at the World Health Organization classifies particulate matter, the main component of air pollution, as carcinogenic and published a study in 2013 definitively linking air pollution and lung cancer.
Industrial cities and densely populated metropolises are home to many sources of air pollution or otherwise fail to counter natural and manmade pollution sources, creating public planning risk scenarios that require mitigation. Of concern to health officials in urban areas are: large open grounds without any trees or grass and that may also lack protection against erosion; motorization, including exhaust and particulates from the residue of tire friction against asphalt; and winterization of roadways, commonly with sands and other reagents. Rural living conditions in the developing world can present uniquely challenging pollutants because reducing the pollutants would require cultural adaptations. For example, the use of biomass for fuel and home construction as well as poor sanitation in highly travel roadways generates air pollution.
*PM10 is used to describe particles of 10 micrometers or less and PM2.5 represents particles less than 2.5 micrometers in aerodynamic diameter.
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The worst drought to affect South Africa in the last century is further damaging the economic strength of the county's sugar sector. According to the United States Department of Agriculture, South Africa was expected to harvest 1.61 million metric tons of sugar during the 2016/2017 marketing year, a decrease of 5.5 percent from the previous marketing year and the lowest marketed-yield since 1995. Sugar producers are already grappling with competition from cheap imports, forcing some mills to remain closed and reducing employment in the sector.Note: Precipitation amounts less than 0.5 mm have been replaced with "0" values.
Hurricane Matthew is estimated to be the most powerful storm to hit the Caribbean region in the last decade. The hurricane has already uprooted hundreds of thousands of people in Cuba, Haiti, and Jamaica, according to the latest situation report from the United Nations Office for the Coordination of Humanitarian Affairs. The total population exposed to Matthew Cyclone is more than 10 million people—roughly equal to the total population of Haiti—and half of these people are vulnerable to the hurricane. We at Knoema have a special ongoing relationship with the government and people of Haiti, so in today’s Viz of the Day, we are taking a...
No matter your perspective on global warming, data confirms immense growth of CO2 emissions during the period from 1753-2004, from 3 million to 4.2 billion metric tons of carbon.China and the United States combined are responsible for almost 40 percent of today's global CO2 emissions.On a per capita basis, US CO2 emissions stabilized at 5 metric tons per person in the early 1980s. In contrast, China's per capita CO2 emissions are relatively low at 1.4 metric tons. Such per capita discrepancies are standard between developed and developing countries and are central to the call globally to ensure climate-friendly economic growth and...