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  2. List of global issues - Wikipedia

    en.wikipedia.org/wiki/List_of_global_issues

    This list of global issues presents problems or phenomena affecting people around the world, including but not limited to widespread social issues, economic issues, and environmental issues. Organizations that maintain or have published an official list of global issues include the United Nations, and the World Economic Forum.

  3. List of environmental issues - Wikipedia

    en.wikipedia.org/wiki/List_of_environmental_issues

    Climate change — Global warming • Global dimming • Fossil fuels • Sea level rise • Greenhouse gas • Ocean acidification • Shutdown of thermohaline circulation • Environmental impact of the coal industry • Urban heat islands • Flooding

  4. Lifestyle disease - Wikipedia

    en.wikipedia.org/wiki/Lifestyle_disease

    Lifestyle diseases can be defined as the diseases linked to the manner in which a person lives their life. These diseases are non-communicable , and can be caused by lack of physical activity , unhealthy eating , alcohol , substance use disorders and smoking tobacco , which can lead to heart disease , stroke , obesity , type II diabetes and ...

  5. Column: America's decline in life expectancy speaks volumes ...

    www.aol.com/news/column-americas-decline-life...

    Jeremy Ney, American Inequality. COVID-19 is the most obvious and convenient culprit, both for the absolute decline in life expectancy and the divergence between the experiences of the U.S. and ...

  6. Social issue - Wikipedia

    en.wikipedia.org/wiki/Social_issue

    For example, a high unemployment rate that affects millions of people is a social issue. ... Throughout the life course, there are social problems associated with ...

  7. List of NP-complete problems - Wikipedia

    en.wikipedia.org/wiki/List_of_NP-complete_problems

    The problem for graphs is NP-complete if the edge lengths are assumed integers. The problem for points on the plane is NP-complete with the discretized Euclidean metric and rectilinear metric. The problem is known to be NP-hard with the (non-discretized) Euclidean metric. [3]: ND22, ND23

  8. List of unsolved problems in biology - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Unsolved problems relating to the structure and function of non-human organs, processes and biomolecules include: Korarchaeota (archaea). The metabolic processes of this phylum of archaea are so far unclear. Glycogen body. The function of this structure in the spinal cord of birds is not known. Arthropod head problem. A long-standing zoological ...

  9. Lists of unsolved problems - Wikipedia

    en.wikipedia.org/wiki/Lists_of_unsolved_problems

    List of unsolved problems may refer to several notable conjectures or open problems in various academic fields: Natural sciences, engineering and medicine