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A former graduate student reflects on how Isadore Singer, who died on February 11, brought together mathematicians, physicists and anyone else interested in the deeper connections between diverse fields.

Researchers are tracking the different strains of SARS-CoV-2 and studying how they spread through our population and our bodies.

The relationships among the properties of flexible shapes have fascinated mathematicians for centuries.

Imagine if we lived on a cube-shaped Earth. How would you find the shortest path around the world?

Today’s information age is only possible thanks to the groundbreaking work of a lone genius.

Has physics reached the limits of what we can discover — or are the possibilities only just beginning?

Struggling with math problems that can’t be solved helps us better understand the ones we can.

New research links serotonin and dopamine not just to addiction and depression, but to the ability to control genes.

Despite recent progress on the notorious Collatz conjecture, we still don’t know whether a number can escape its infinite loop.