OpenAI CEO Sam Altman told employees that the AI device will be relatively small, able to sit atop a desk or fit in a pocket, ...

Stablecoins promise price stability, but recent crashes, weak oversight, and hidden risks show they may be far less secure than they seem.

I had no idea so much was happening beyond my vision by a cadre of amazing young activists. : Stories of Youth Organizers, ...

Patina Osaka opened in April 2025 just across from the historic Osaka Castle and has a fantastic art collection, one of Japan ...

Objective Heart failure with preserved ejection fraction (HFpEF) is a common heterogeneous syndrome that remains imprecisely defined and consequently has limited treatment options and poor outcomes.

Table Of Contents Page, PNAS Volume 122, Number 24. June 17, 2025 | vol. 122 | no. 24. Previous issue. All Issues. Next issue. PNAS June 17, 2025. Perspective. Perspective May 30, 2025 Dataset.

The cover shows an artist’s impression of Archaeopteryx, the oldest-known fossil bird, which lived some 150 million years ago. In this week’s ...