Group selection

Group selection is a proposed mechanism of evolution in which natural selection is imagined to act at the level of the group, instead of at the more conventional level of the individual. Early authors such as V. C. Wynne-Edwards and Konrad Lorenz argued that the behavior of animals could affect their survival and reproduction as […]

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Freeman Dyson: Heretical Thoughts About Science and Society

Freeman Dyson with dry wit and self-effacing good humor explains that by heretical he means ideas that go against prevailing dogmas, and that in his self-appointed role as heretic, he is unimpressed by conventional wisdom. Hosted by Pardee Center for the Study of the Longer-Range Future on November 1, 2005. Advertisements

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478 ppm

Climate Change: Plants Choke on too Much Carbon By Brian Stallard Jun 15, 2015 03:12 AM EDT CO2 is plant food Earth’s current atmospheric CO2 concentration is almost 390 parts per million (ppm).  Adding another 300 ppm of CO2 to the air has been shown by literally thousands of experiments to greatly increase the growth […]

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Ocean Climate

Ocean acidification is the ongoing decrease in the pH of the Earth‘s oceans, caused by the uptake of carbon dioxide (CO2) from the atmosphere.[2] Seawater is slightly basic (meaning pH > 7), and the process in question is a shift towards pH-neutral conditions rather than a transition to acidic conditions (pH < 7).[3] Ocean alkalinity […]

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Climate is the long term patern

Published on Oct 4, 2013 This edition of COSMIC JOURNEYS explores the still unfolding story of Earth’s past and the light it sheds on the science of climate change today. While that story can tell us about the mechanisms that can shape our climate. it’s still the unique conditions of our time that will determine […]

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STEM

Science, Technology, Engineering and Mathematics (STEM, previously SMET) is an acronym that refers to the academic disciplines of science[note 1], technology, engineeringand mathematics.[1] The term is typically used when addressing education policy and curriculum choices in schools to improve competitiveness in science and technology development. It has implications for workforce development, national security concerns and […]

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Punctuated equilibrium

Punctuated equilibrium (also called punctuated equilibria) is a theory in evolutionary biology which proposes that once species appear in the fossil record they will become stable, showing little net evolutionary change for most of their geological history. This state is calledstasis. When significant evolutionary change occurs, the theory proposes that it is generally restricted to […]

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