Conservationists are trying to preserve a rare cat that is in danger of dying out, but Yemen’s combination of lawlessness and red tape makes it tough.

Though it calls to mind medieval massacre, the deadly infectious disease known simply as plague is still around. New research on how the disease spreads helps us better understand the pandemic that killed up to 100 million people, and how to continue to keep it in check.

The French satirical weekly took its name—and more—from Charles Schulz' roundheaded hero.

Their history informs fantastical myths and legends, while American tales tend to focus on moral realism.

Kevin Esvelt argues that the tremendous power of CRISPR can only be contained if scientists are open about their research.