simplified laws of science.

Words of Wisdom found in Math Formulas. (Source) Well, actually in Physics formulas, mathematics is just circumstantial here.

history of life chart_2010_50dpi1

Pre-Historial Human Existence Geological time and the history of life chart.

Why I give my students a ‘tragedy of the commons’ extra credit challenge - The Washington Post

Why I give my students a ‘tragedy of the commons’ extra credit challenge

Why I give my students a ‘tragedy of the commons’ extra credit challenge - The Washington Post

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