Topics
![](http://image.absoluteastronomy.com/images/topicimages/p/po/poverty.gif)
Poverty is the lack of a certain amount of material possessions or money. Absolute poverty or destitution is inability to afford basic human needs, which commonly includes clean and...
![](http://image.absoluteastronomy.com/images/topicimages/p/pa/pandemic.gif)
A pandemic is an epidemic of infectious disease that is spreading through human populations across a large region; for instance multiple continents, or even worldwide. A widespread endemic disease...
![](http://image.absoluteastronomy.com/images/topicimages/m/ma/marine_pollution.gif)
Marine pollution occurs when harmful, or potentially harmful effects, can result from the entry into the ocean of chemicals, particles, industrial, agricultural and residential waste, noise, or the spread of...
![](http://image.absoluteastronomy.com/images/topicimages/o/ov/overpopulation.gif)
Overpopulation is a condition where an organism's numbers exceed the carrying capacity of its habitat. The term often refers to the relationship between the human population and its environment, the...
![](http://image.absoluteastronomy.com/images/topicimages/o/oi/oil_depletion.gif)
Oil depletion occurs in the second half of the production curve of an oil well, oil field, or the average of total world oil production. The Hubbert peak theory makes...
![](http://image.absoluteastronomy.com/images/topicimages/d/de/democracy.gif)
Democracy is generally defined as a form of government in which all adult citizens have an equal say in the decisions that affect their lives. Ideally, this includes equal...
![](http://image.absoluteastronomy.com/images/topicimages/o/or/origin_of_language.gif)
The origin of language is the emergence of language in the human species. This is a highly controversial topic. Empirical evidence is so limited that many regard it as unsuitable...