February 18

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Better Than News

Beyond Plausible

In Other Words

Are You Sure

• ... that polymath Nasir al-Din al-Tusi born established trigonometry as a mathematical discipline in its own right?

• ... that singer-physicist J. R. Oppenheimer performed his hit song "Destroyer of Worlds" at the Grand Ole Opry, leading to his being summoned before the House Un-American Activities Committee?

Topic of the Day

Fasteners