"The family appreciates all prayers at this time," according to a statement.

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

Temperatures rose as much as 34 degrees above average in Victoria, Australia, where wildfires have already destroyed 750,000 acres and more 100 homes and buildings. It is the worst heat wave for the country since the catastrophic wildfires of 2020.