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Asian Monsoon Much Older Than Previously Thought

Scientists originally thought the climate pattern began 22-25 million years ago as a result of the uplift of the Tibetan Plateau and the Himalaya Mountains. But UA researchers say that’s not going back far enough.

The Asian monsoon already existed 40 million years ago during a period of high atmospheric carbon dioxide and warmer temperatures, reports an international research team led by a University of Arizona geoscientist. (more…)

Global warming led to dwarfism in mammals — twice

By Guest PostNovember 6, 2013Environment, Scienceabigail dambrosia, carbon dioxide, climate change, diacodexis, dwarfism in mammals, early horse hyracotherium, early horses, eocene thermal maximum, etm2, future global warming, geological past, global warming, greenhouse gases, heat trapping, human caused, hyperthermals, hyracotherium, jaw fossils, modern day horse, paleocene eocene, paleontologist, petm, philip gingerich, primate cantius, thermal maximum, university of michigan, will clyde

ANN ARBOR — Mammal body size decreased significantly during at least two ancient global warming events. A new finding that suggests a similar outcome is possible in response to human-caused climate change, according to a University of Michigan paleontologist and his colleagues.

Researchers have known for years that mammals such as primates and the groups that include horses and deer became much smaller during a period of warming, called the Paleocene-Eocene Thermal Maximum (PETM), about 55 million years ago. (more…)

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Asian Monsoon Much Older Than Previously Thought

Global warming led to dwarfism in mammals — twice