The researcher Eliezer Yudkowsky argues that we should be very afraid of artificial intelligence’s existential risks.

Circumcision is the latest example of Kennedy seizing on a hot-button issue that already has entrenched and aggressive internet partisans.

Will Black voters continue to have an opportunity to elect representatives of their choice, or will decades of hard-won progress disappear?

The war might have ended, one lawyer argues, but the occupation remains.

Times Opinion convened a panel to weigh in on the race.

The researcher Eliezer Yudkowsky argues that we should be very afraid of A.I.’s existential risk.

The best safeguard against tyranny is a legion of people who believe in an authority higher than any political program.

An American bailout can carry the country only so far.

A pious vision of political economy should get more concrete.

Message to Trump: As hard as Stage 1 was for Gaza peace, you have not even seen hard yet.

Israelis went to war to defeat an existential threat — and an existential lie.

Readers respond to news and opinion articles about “this historic moment” in the Middle East. Also: Dangerous obstacles to Covid vaccines.

The former transportation secretary argues Americans need a new sense of belonging.

We are paying a tremendous political and psychological cost for access to social media.

The A.I. boom is likely a speculative bubble. Like the dot-com bust and the housing crisis, its pop is going to hurt.

Lessons from previous anti-immigrant sweeps don’t look good for the Trump administration.

We long for community. Why do so few of us try to build it?

Is a powerful addiction treatment already invented?

Readers respond to a column by David Brooks. Also: The marring of the White House; a sharp right turn to populism.

Trump and his Republican minions won’t rest until the truth of that day is buried.

The reactionary centrism of “After the Hunt.”

Drinking is down, but there are a few simple fixes that can get people hoisting their cans again.

What does it means to be a “good” Muslim in America?

A principle is hollow if it’s not defended under pressure.

And what that might mean for the future of American politics.

Developing countries have started taking greater responsibility for their own welfare, leveraging private investment to create economic opportunity.

It’s too good to be true, and I’m OK with that.

What’s happening is shocking. It can get worse.

While he is trying to sell it as a strategic win, the peace deal contradicts many of his coalition’s goals.