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The Sub-Atlantic period began about 225 BC (estimated on the basis of radiocarbon dating) and has been characterized by increased rainfall, cooler and more humid climates, and the dominance of beech forests. The fauna of the Sub-Atlantic is essentially modern although severely depleted by human activities.
These data, known as the Keeling Curve, have iconic status in climate change science as evidence of the effect of human activities on the chemical composition of the global atmosphere. [37] Keeling's initial 1958 measurements showed 313 parts per million by volume .
1800–1500: Middle Bronze Age Cold Epoch, a period of unusually cold climate in the North Atlantic region Bond Event 2: Possibly triggering the Late Bronze Age collapse: 900–300: Iron Age Cold Epoch cold in North Atlantic. Perhaps associated with the Homeric Minimum: 250 BC–400 AD: Roman Warm Period
Climate change has been linked to human migration from as early as the end of the Pleistocene to the early twenty-first century. [ 10 ] [ 11 ] The effect of climate on available resources and living conditions such as food, water, and temperature drove the movement of populations and determined the ability for groups to begin a system of ...
The United Nations Department of Economic and Social Affairs cautions that a warming planet will exacerbate environmental and other inequalities, particularly with regard to: "(a) increase in the exposure of the disadvantaged groups to the adverse effects of climate change; (b) increase in their susceptibility to damage caused by climate change ...
Climate change can also be used more broadly to include changes to the climate that have happened throughout Earth's history. [32] Global warming—used as early as 1975 [33] —became the more popular term after NASA climate scientist James Hansen used it in his 1988 testimony in the U.S. Senate. [34] Since the 2000s, climate change has ...
The conservation and restoration of parchment constitutes the care and treatment of parchment materials which have cultural and historical significance. Typically undertaken by professional book and document conservators , this process can include preventive measures which protect against future deterioration as well as specific treatments to ...
Human changes of the composition of the atmosphere or land use. [45] Human activities causing anthropogenic greenhouse gas emissions leading to global warming and associated climate changes. Large asteroids that have cataclysmic impacts on Earth’s climate are considered external forcings. [46]