As the threat spreads west, gene-technology company Colossal Biosciences is under pressure to deliver. Find out more.

In 2004, science crossed a quiet line. Researchers confirmed that tiny scraps of plastic were not just drifting in oceans but entering living bodies. Two decades later, that discovery feels less like ...

Researchers successfully implanted a genetically modified pig liver into a human, proving that such an organ can function for an extended period. The graft supported essential liver processes before ...