The last century was one of incredible social changes and development. Improvements in health, urbanization, better education and industrialization has brought about economic growth and improved standards of living to much of the globe.
Yet, this progresses however, has been uneven leaving one million people still living in extreme poverty and has been accompanied by demographic and environmental change. Over the last hundred years, the population of the world has grown from around 1 billion peoples to more than 7 billion people. Human activity has transformed vast areas of the earth's surface, alerted the atmosphere resulted in thousands of plant and animal species extinctions.
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