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What percent of world's population lives in plains

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80% of wolrd's population resides in plains.

=At least 80% of humanity lives on less than $10 a day.Source 1

More than 80 percent of the world’s population lives in countries where income differentials are widening.Source 2

The poorest 40 percent of the world’s population accounts for 5 percent of global income. The richest 20 percent accounts for three-quarters of world income.Source 3

According to UNICEF, 22,000 children die each day due to poverty. And they die quietly in some of the poorest villages on earth, far removed from the scrutiny and the conscience of the world. Being meek and weak in life makes these dying multitudes even more invisible in death.Source 4

Around 27-28 percent of all children in developing countries are estimated to be underweight or stunted. The two regions that account for the bulk of the deficit are South Asia and sub-Saharan Africa.

If current trends continue, the Millennium Development Goals target of halving the proportion of underweight children will be missed by 30 million children, largely because of slow progress in Southern Asia and sub-Saharan Africa.Source 5

Based on enrollment data, about 72 million children of primary school age in the developing world were not in school in 2005; 57 per cent of them were girls. And these are regarded as optimistic numbers.Source 6

Nearly a billion people entered the 21st century unable to read a book or sign their names.Source 7

Less than one per cent of what the world spent every year on weapons was needed to put every child into school by the year 2000 and yet it didn’t happen.Source 8

Infectious diseases continue to blight the lives of the poor across the world. An estimated 40 million people are living with HIV/AIDS, with 3 million deaths in 2004. Every year there are 350–500 million cases of malaria, with 1 million fatalities: Africa accounts for 90 percent of malarial deaths and African children account for over 80 percent of malaria victims worldwide.Source 9

Water problems affect half of humanity:

Some 1.1 billion people in developing countries have inadequate access to water, and 2.6 billion lack basic sanitation.

Almost two in three people lacking access to clean water survive on less than $2 a day, with one in three living on less than $1 a day.

More than 660 million people without sanitation live on less than $2 a day, and more than 385 million on less than $1 a day.

Access to piped water into the household averages about 85% for the wealthiest 20% of the population, compared with 25% for the poorest 20%.

1.8 billion people who have access to a water source within 1 kilometre, but not in their house or yard, consume around 20 litres per day. In the United Kingdom the average person uses more than 50 litres of water a day flushing toilets (where average daily water usage is about 150 liters a day. The highest average water use in the world is in the US, at 600 liters day.)

Some 1.8 million child deaths each year as a result of diarrhoea

The loss of 443 million school days each year from water-related illness.

Close to half of all people in developing countries suffering at any given time from a health problem caused by water and sanitation deficits.

Millions of women spending several hours a day collecting water.

To these human costs can be added the massive economic waste associated with the water and sanitation deficit.… The costs associated with health spending, productivity losses and labour diversions … are greatest in some of the poorest countries. Sub-Saharan Africa loses about 5% of GDP, or some $28.4 billion annually, a figure that exceeds total aid flows and debt relief to the region in 2003.Source

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