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Due to relative poverty in large parts of sub-Saharan Africa (especially in rural areas) a lot of people can't afford contraceptives even when they are available, furthermore, high rates of subsistence fa...

Urbanisation and re-urbanisation both refer to the net movement of people into urban areas; in this sense, they are similar. The key difference lies in the times at which this movement occurs. Urbanisatio...

Ecotown's are a government scheme initiated in 2007, with the plan to build 10 eco towns by 2020. Their role is to ease the adorability crisis and develop more places to live that are eco-friendly, whilst...

Primary impacts are those that affect the area in close proximity to the volcano immediately after a volcanic event. A first impact is that of the release of tephra which is solid material that can range ...

CO₂ levels in the atmosphere could have increased due to deforestation, as there are now less trees to re-absorb this gas. Emissions of CO₂ may also have risen due to the increased b...