A Washington Post goes inside U.S. government failures to address the fentanyl crisis — and the missteps that allowed it to get significantly worse.

Ten years after the Sandy Hook shooting, gun-safety advocates can point to some wins. NBC News takes stock, while the Trace looks at how victims’ families turned their grief into advocacy.

Babies who were born into pandemic lockdowns and extreme-hygiene rules will have different microbiomes. But does different mean bad? The Atlantic has the story.

There’s a new phenomenon in air travel: the holiday-travel blob. And airlines and hotels are ready to cash in. Wired explains.