Marijn Heule turns mathematical statements into something like Sudoku puzzles, then has computers go to work on them. His ...

Cecilia Muñoz on how to solve America’s biggest political challenge. By Cecilia Muñoz, David Leonhardt and Jillian Weinberger The round table convenes to discuss what comes after the Democrats’ big ...

Twenty years ago, a genocidal campaign in the Darfur region of Sudan shocked the world. Now, videos and images of new atrocities have captured global attention once more. Declan Walsh, who has been ...