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In secondary school, matrices don’t get anything near a fair shake. In case it has been a while, matrices were those rectangular grids of numbers that look something like this: In most secondary schools, you learn in your sophomore year the rules for adding them together, multiplying them, and for using them to represent systems of equations (the above matrix, for example, could represent the system 5x + 2y = 3, 1x + 4y = -2), and that is basically it. Throughout all of cal

Water is that great, terrible thing. Its chemical properties make it a magnificent solvent and coolant, which is wonderful if you’re...