Concerns about long-term side effects have helped fuel vaccine hesitancy. An immunologist explains why we can be confident in vaccine safety.

If we want to address vaccine hesitancy in the health care system, we must treat its lowest paid workers better.

This summer, an intelligence report and a new Harvard research project have renewed the public’s interest in UFOs. But neither is likely to change many minds.

The pandemic increased demand and possibilities for automating care, but doing so may deliver racist stereotypes and unemployment for women of color.

A recent government report gave UFOs a rebrand, but so many basic questions remain unanswered.

Justice demands that we think not just about profit or performance, but above all about purpose.

Billionaires such as Musk, Bezos, and Branson peddle the idea that space represents a public hope, all the while reaping big private profits.

The problems go beyond the abstractions of democracy and liberty. New workplace technologies cater to punitive practices.

When it comes to AI’s effect on the workforce, the real challenge is wages, not jobs.

Discussions about “fairness” don’t go far enough. We need to think more deeply about who controls data and algorithms.

Studying the social world requires more than deference to data—no matter the prestige or sophistication of the tools with which they are parsed.

Its authority derives not from unbiased scientists but from the institutions and norms that structure their work. Fighting mistrust requires more public engagement with policy, not unqualified deference to experts.