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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

    This is an alphabetical list of environmental issues, harmful aspects of human activity on the biophysical environment. They are loosely divided into causes, effects and mitigation, noting that effects are interconnected and can cause new effects.

  4. List of unsolved problems in biology - Wikipedia

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

    Homochirality is an obvious characteristic of life on Earth, yet extraterrestrial samples contain largely racemic compounds. [7] It is not known whether homochirality existed before life, whether the building blocks of life must have this particular chirality, or whether life must be homochiral at all. [8] [9] What do all the unknown proteins do?

  5. 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

  6. Lists of diseases - Wikipedia

    en.wikipedia.org/wiki/Lists_of_diseases

    A medical condition is a broad term that includes all diseases and disorders.. A disease is an abnormal condition affecting the body of an organism.. A disorder is a functional abnormality or disturbance.

  7. List of causes of death by rate - Wikipedia

    en.wikipedia.org/wiki/List_of_causes_of_death_by...

    The following is a list of the causes of human deaths worldwide for different years arranged by their associated mortality rates. In 2002, there were about 57 million deaths. In 2002, there were about 57 million deaths.

  8. Lists of problems - Wikipedia

    en.wikipedia.org/wiki/Lists_of_problems

    The following articles contain lists of problems: List of philosophical problems; List of undecidable problems; Lists of unsolved problems; List of NP-complete problems;

  9. List of childhood diseases and disorders - Wikipedia

    en.wikipedia.org/wiki/List_of_childhood_diseases...

    Disability-adjusted life year for childhood-cluster diseases per 100,000 inhabitants. These include pertussis , poliomyelitis , diphtheria , measles , and tetanus . no data