Penn physicist Patricio Gallardo and collaborators tracked the speeds of distant galaxy clusters to test the strength of gravity across hundreds of millions of light-years. The verdict? Gravity neatly matches the classic equations written by Newton and Einstein. By proving the fundamental laws of physics span these massive cosmic scales, the results leave little doubt that invisible dark matter exists.

Printed artificial neurons generate realistic brain-like signals that activate living neurons. Device uses flexible, low-cost electronic inks instead of rigid silicon fabrication. Approach could lead to bioelectronics that communicate directly with the brain and energy-efficient, brain-inspired computing.

New research reveals a powerful yet overlooked driver of climate change: Intensifying ocean eddies. These swirling currents—that break off from major currents—are redistributing heat and nutrients in the ocean and amplifying climate extremes in key coastal ecosystems.

Florida’s coral reefs are under siege from fast-spreading diseases like Stony Coral Tissue Loss Disease, yet their hidden structural impacts remain poorly understood. FAU researchers used advanced micro-CT imaging and deep learning to analyze coral skeletons in 3D, revealing subtle changes in porosity, density and thickness with 98% accuracy. This innovative approach offers a powerful new tool to rapidly assess reef health and better guide conservation strategies in the face of escalating environmental threats.

A custom-built artificial intelligence system developed by Rice researchers helped uncover how bacterial communities self-organize.