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xkcd : Earth Temperature Timeline
(imgs.xkcd.com)
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This is a work in progress, please don't mind the mess.
What is geoscience?
Geoscience (also called Earth Science) is the study of Earth. Geoscience includes so much more than rocks and volcanoes, it studies the processes that form and shape Earth's surface, the natural resources we use, and how water and ecosystems are interconnected. Geoscience uses tools and techniques from other science fields as well, such as chemistry, physics, biology, and math! Read more...
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Climate
IQ tests are designed relative to the population so the median is always (or should always be) 100. The point is that is measures people against one another in the present. If we all got 10% smarter, our individual IQ scores would stay the same.