Water and sanitation play a crucial role in the transmission of diarrheal disease. These environmental factors contribute to approximately 94 percent of the 4 billion cases of diarrhea that the World Health Organization (WHO) estimates to occur globally each year.
(2003) The lingering effects of a long civil war, climatic changes, and infectious diseases represent major threats to life in the southern African nation of Mozambique, where 17.5 million people live, the vast majority in rural poverty.
Carbon dioxide emissions have grown dramatically in the past century because of human activity, chiefly the use of fossil fuels such as oil and coal, as well as changes in land use such as cutting down forests.
(2005) Americans perched on punctured rooftops in the blazing sun for days. Others slogged through rising floodwaters. And many others rushed inland before the storm hit, only to remain homeless weeks later, unable to return to their ruined homes.
(2008) Research has shown that growing up in poverty leads to negative health, social, and economic consequences for children that often continue in adulthood.
Population pyramids are one of demography's most useful graphics. And they can be easily prepared in Excel and PowerPoint. Here are some simple instructions and files to get you going.
Even before the massive earthquake in January 2010, Haiti's nearly 10 million people ranked as the poorest in the Western Hemisphere.