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The 4.2-kiloyear (thousand years) BP aridification event (long-term drought), also known as the 4.2 ka event, [2] was one of the most severe climatic events of the Holocene epoch. [3] It defines the beginning of the current Meghalayan age in the Holocene epoch. Starting around 2200 BC, it most likely lasted the entire 22nd century BC.
However, all of these events were limited to individual human societies: a collapse of the entire human civilization would be historically unprecedented. Some of the more extreme warnings of civilizational collapse caused by climate change, such as a claim that civilization is highly likely to end by 2050, have attracted strong rebutals from ...
It is now widely accepted that the devastation and climate disruption resulting from the impact was the primary cause of the Cretaceous–Paleogene extinction event, a mass extinction of 75% of plant and animal species on Earth, including all non-avian dinosaurs.
Bond events are North Atlantic ice rafting events which Gerard Bond sought to link to climate fluctuations in the Holocene. Eight such events have been identified. Bond events were previously believed to exhibit a roughly c. 1,500-year cycle, but the primary period of variability is now put at c. 1,000 years.
Science, technology, society and environment (STSE) education, originates from the science technology and society (STS) movement in science education.This is an outlook on science education that emphasizes the teaching of scientific and technological developments in their cultural, economic, social and political contexts.
Expeditions in Antarctica before the Heroic Age of Antarctic Exploration, 1897 Early Western theories believed that in the far south of the globe existed a vast continent, known as Terra Australis . The rounding of the Cape of Good Hope and Cape Horn in the 15th and 16th centuries proved that Terra Australis Incognita ("Unknown Southern Land ...
However, the country hadn't submitted any formal plan to managing or reducing levels of greenhouse gas emissions. Weak commitments, corner stoned by expensive pledges from developed countries, the UNFCCC served a greater purpose as an educational, focusing event around the issue of climate change rather than an event resulting in mobilization.
This method is especially useful in marine exploration and geology as it can not only characterize geological features on the seafloor but can survey aircraft and ship wrecks deep under the sea. [19] A magnetometer is the main piece of equipment deployed, which is typically towed behind a vessel or mounted to a AUV.