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The legendary graph isomorphism problem may be harder than a 2015 result seemed to suggest.

There’s more than one way to build a universe suitable for life.

Sant Director, National Museum of Natural History

Vice President for Science Education, Howard Hughes Medical Institute

Gravitational-wave Astrophysicist, Caltech and NASA’s Jet Propulsion Laboratory

Director and Leon Levy Professor, Institute for Advanced Study

The elephant researcher tells her story.

Can you turn a two-dimensional fractal into a 3-D object? Break out your scissors and tape for a chance to win a 3-D printed sculpture.

A marine biologist talks about the wonders of hidden lakes.

Director of the National Science Foundation