Sen. Kamala D. Harris (Calif.), one of the Democratic Party’s possible 2020 presidential contenders, earlier this year proposed an enormous tax cut for the middle class. Under Harris’s plan, the ...

Napoleon’s theorem states that if you erect equilateral triangles on the sides of an arbitrary triangle, the centers of those three equilateral triangles will form an equilateral triangle, too. In ...

The Nature Index 2024 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...