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b. 1941

Jim Hansen, b. 1941, NASA GISS director, atmospheric physicist, author and environment activist.

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"Now, I am afraid my usefulness has ended."

"Maestro Galileo, don't be like that. I promise you you will go down in history."

"That's what my teacher told me. If you don't study harder, he said, you will go down in history."

"Maestro Galileo, don't be like that. I promise you you will go down in history."

"That's what my teacher told me. If you don't study harder, he said, you will go down in history."

A Term a Day:

$x = {-b ±√{b^2 - 4ac}}/{2a}$

$x = {-b ±√{b^2 - 4ac}}/{2a}$

The solution to the quadratic equation (binomial solution) $ax^2 + bx + c = 0$ is:

$$x = {-b ± √{b^2 - 4ac}}/{2a}$$For a quadratic in the form $y = ax^s + bx + c$, the axis of symmetry is $x = {-b}/{2a}$, and the vertex is located at: $({-b}/{2a}, f{-b}/{2a})$.