Largest, oldest Maya monument suggests importance of communal work

From the ground, it's impossible to tell that the plateau underfoot is something extraordinary. But from the sky, with laser eyes, and beneath the surface, with radiocarbon dating, it's clear that it is the largest and oldest ...

Are peaceful protests more effective than violent ones?

As unrest erupts across the world after the killing of a Black man, George Floyd, by a white police officer, even some peaceful protests have descended into chaos, calling into question the efficacy of violence when it comes ...