Russia fields the Ulan-2, a simple, low-cost vehicle built for drone-dominated kill-zones, signaling a shift toward rapid, adaptable battlefield innovation in Ukraine.

Scientists created virtual replicas of patients’ diseased hearts so precise that blocking a dangerous irregular heartbeat in these digital “twins” showed doctors how to better treat the real thing. One of the first clinical trials of these custom models suggests it might improve care for ventricular tachycardia, a notoriously difficult-to-treat arrhythmia that is a major cause of sudden cardiac arrest, blamed for about 300,000 U.S. deaths a year. The study, by researchers at Johns Hopkins Univ

Design is steadily developing, and each season carries with it a new influx of patterns that charm the business and style