In the 1930s and 1940s, for example, a group of Polish mathematicians regularly met in a café in Lwów, Poland (now Lviv, ...

The incompleteness theorem is accepted as part of the mathematical canon today, but columnist Jacob Aron says it was a ...

Learn about the Pythagorean theorem. The Pythagoras theorem is a fundamental relation among the three sides of a right triangle. It is used to determine the missing length of a right triangle. The ...

In These Times is at a crossroads and we urgently need your support. Will you help us raise $50,000 by the end of the week? During President Donald Trump’s State of the Union address on Tuesday, he ...

The G-20 presidency of South Africa ended last November with the release of a report on global inequality. It was authored by a G-20 committee of independent experts chaired by Nobel Prize winner ...

A variation of a puzzle called the “pick-up sticks problem” asks the following question: If I have some number of sticks with random lengths between 0 and 1, what are the chances that no three of ...

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Penn School of Social Policy and Practice faculty, postdocs, and doctoral students were awarded several grants to focus on energy research and climate policy. Credit: Jintong Wu The Kleinman Center ...