In a landmark opinion, a federal judge ruled on Tuesday that the Trump administration unconstitutionally targeted noncitizens for pro-Palestine advocacy, in violation of the First Amendment and with ...

Dads form group to write letters to thousands of strangers Buz Ecker is a man of letters -- one a day to his three kids over the course of their lives. He started writing to his daughter, Rosie Paulik ...

Get creative with Mister Maker and his helpers. There are lots of things to make and do.

The dynamical equations of motion for a discrete, one-dimensional harmonic chain with side restoring forces are analogous to the relativistic Klein–Gordon equation. Dirac factorization of the discrete ...

I’m an Opinion columnist for The New York Times, writing about foreign and domestic issues. I often report from around the world, but I’m also very interested in how we fix the rifts in America and ...