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The article reports that thousands of tons of material left curbside for recycling in American cities and towns have gone to landfills after China banned in summer 2018 imports of various types of plastic and paper for recycling as part of its antipollution campaign. Topics covered include the difficulty of waste managers in finding a substitute for the Chinese market, and six ways to properly recycle to prevent the recyclable materials from being contaminated.

The article discusses the relationship between the decrease in the price of oil and the 2015 international climate accord targeting the reduction of carbon emissions, including the U.S. and China's policy of reducing emissions. The impact that the lowering of petroleum prices has on the reduced use of clean energy, including in regard to price increases in the cost of solar energy, is discussed.

The article reports on a United Nations (UN) climate accord in which nearly every country among the 195 represented nations agreed to reduce greenhouse gas emissions in order to mitigate the effects of climate change. Poor nations as well as wealthier states have agreed to reduce emissions. Scientists warn, however, that the deal will only reduce emissions by about half as much as is needed to prevent devastating environmental effects. Topics discussed include environmental policy in China and the U.S. and the energy industry.

The article discusses a 2014 United Nations (U.N.) summit aimed at negotiating an international agreement aimed at mitigating greenhouse gas emissions in response to climate change, noting that it is likely impossible to prevent a global temperature rise and the near-term detrimental impact of climate change. Topics addressed include an agreement between the United States and China aimed at reducing carbon dioxide emissions, as well as scientists' concerns that action will not be taken quickly enough.