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The recycled paper manufacturing process is introduced starting in Philadelphia
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Coal started to be used in the industrial revolution
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This article started a discussion about global warming which later contributed to different observations being made.
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People begin to worry about rising temperatures causing the Antarctic glaciers to collapse.
Video link: https://www.youtube.com/watch?v=cfmYeVbKcNI -
The clean air act is a federal law that regulates air emissions from stationary and mobile sources.
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Brought attention to the problem of increasing waste and the importance of recycling.
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The second oil crisis created a movement that encouraged the use of renewable energy sources.
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Bleaching caused by climate change killed almost a quarter of its coral this year.
( video link: http://www.smh.com.au/national/startling-images-reveal-devastating-coral-bleaching-on-the-great-barrier-reef-20160321-gnnjt3.html ) -
China and the US are responsible for nearly half the worlds increase on oil demands in 2004.
Video link: https://www.youtube.com/watch?annotation_id=annotation_2275341809&feature=iv&list=UUgRvm1yLFoaQKhmaTqXk9SA&src_vid=ynaOH7OmMcM&v=KaRBrj5GjIE -
The global average concentration of the greenhouse gas passed 400 parts per million in March for the first time since record-keeping began.