As Bashar al-Assad and Russia prepare to assault Idlib, there are up to 3 million people with nowhere to go.

And other gems from The Atlantic's coverage of major stories 50, 100, and 150 years ago

A pair of two-foot-long spines, running down the neck of Bajadasaurus, might have presented a “disturbing fence” to lurking predators.

The U.S. has long warned about encroaching Chinese influence around the world. And it’s touching America’s closest allies.

In a series of tweets attacking four Democratic congresswomen, the president reiterated his belief that only white people can truly be American.

To understand the virus’s history, a team worked to reconstruct its genome from a time before anyone knew the virus existed.

Is this a defining moment in the Trump presidency, or merely some creative packaging?

Republicans aren’t fighting to keep Trump in office—they’re fighting to preserve white-minority power.

His faith in America’s moral direction is out of step with how the protesters feel.