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In the article “Just How Far Will Urban Sprawl Spread?” by Dave Levitan, he explains the impacts of explosive growth in the cities we live in. According to Levitan, “in 1990, 40% of the global population lived in cities, in 2010, we reached the 50% threshold, and the percentage is projected to jump all the way to 70% by 2050. The rapid Increase in population in cities will mean more cities, bigger cities, and of course more sprawl according to Levitan.

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Aly Thomson, Canadian Press contributor, in her article "Canada Overfishing: Cod Stock, Other Species May Never Bounce Back, Study Says", summarized a study that states that the cod population, along with other Canadian fish species, haven't been able to reproduce and grow their numbers or to even keep a steady population due to overfishing. Thomson also explained that fish species usually have a normal, periodic population growth and decline cycles but the cod population hasn't reached its norm level in over twenty years which is a very scary thing to think about.

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The article “Plastics in Our Oceans” by Kimberly Amaral discusses the major impacts of the plastics we use, in our everyday life, on the marine environment. Amaral stresses how essential and convenient plastic is to us, and that we don’t think much of throwing it out. For example, plastic bags that drift in the ocean appear as jellyfish and plastic pellets look like fish eggs thus resulting in fish, birds, and other marine life mistaking the appearance of plastic leading to danger in marine life.

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In this article Nasa looks at the earth's forests from their space flight center. From there they attempt to define what a forest is by looking at what it consists of and what its ecosystem is like. They also take deforestation into account when disscussing the idea of forests. When looking at the earth they were able to determine that "as much a 6 percent of Earth's land area, nearly equivalent to the size of China" (Rocchio, 2015) is covered in forested areas.

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This article, written by Justin Gillis, focuses on the California drought which is evidently made worse by human emissions causing global warming. It is remarked in this article that the amount and lengths of droughts in southern states has increased, if not doubled, over the last century. Many scientists and administrations have also recognized this transformation as record keeping began in 1880 and a recent significant record revealed that the first seven months of 2015 have been the hottest ever reported.

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In Thomson Reuters article “Humans causing catastrophic ecosystem shifts, study finds at least 468 creatures have been eliminated from the planet since 1900”, it is shown that ecosystems have been altered by human dominance like never before. Reuters specifies that the shifts in world ecosystems due to human dominance are unusual compared to the past 500 million years. The radical ecosystem shifts seen are unusual which increases the criticality of the issue.

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Sustainable Earth: Energy By: Brian Handwerk for National Geographic News The problem stated in this article is the lack of access to affordable energy for more than three billion people in the world and a rapid increase in the demand for energy in countries such as China and India.

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The article “As Worlds Population Booms, Will Its Resources Be Enough for Us” primarily speaks of the growing population across the globe and the concern on whether or not we humans are capable of supporting the added life with agriculture, and livestock. The author Dennis Dimmick discusses how there have been many different studies which conducted estimates of the world’s population.

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