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Rafe Pomerance, the Paul Revere of Climate Change, Dies at 79

TRIP GABRIEL

An environmental lobbyist and activist, he was a pivotal figure in drawing public attention and political support to the existential issue.

How to Stay Safe Around Jellyfish This Beach Season

JOHNNY DIAZ

Jellyfish myths and misconceptions abound. Here’s how to stay safe this beach season around these gelatinous wonders.

Tiny alien-like blue octopus discovered lurking off the Galapagos Islands

This teensy creature was discovered along a deep-sea mountain

Experts explain how sunscreen really works—and why better ones may be coming soon

Thick and creamy, gloopy or spray-on, sunscreen can be confounding. This science-backed guide can help you get ready for summer

How mathematicians use Minecraft to calculate pi

A battle between "slimes" and "zoglins" could be the best way to calculate pi—at least for fans of this megahit game

One-and-Done Heart Disease Prevention? Scientists Show It May Be Possible.

GINA KOLATA

A single infusion of an experimental gene-editing drug seemed to reduce LDL long-term in a small trial. The results may point to something “curative,” one expert said.

Threat of Explosion From Toxic Chemical Tank Lessened, Officials Say

CHRISTINA MORALES AND SHAWN HUBLER

Evacuation orders remained in place for more than 40,000 residents around Garden Grove, Calif., the location of an industrial site containing an unstable tank of toxic chemical.

RFK Jr.’s Push to Curb Antidepressants Has Shaken Psychiatry

ELLEN BARRY

An annual psychiatric meeting was abuzz over Robert F. Kennedy Jr.’s call to rein in the use of depression medications. Some fear it will drive patients away from care.