Extreme heat can endanger lives before birth—and put pregnant women, newborns and young children at increasing health risk. This means higher odds of preterm birth, still birth, low birth weight, and cardiovascular complications during labour. For 1.5 billion children, heatwaves are becoming more frequent, lasting longer and growing more severe. WHO, WMO, UNICEF and UNFPA are helping countries make health impacts visible - so they can take action. Learn more: bit.ly/4zLTLEh