Infants, children, and fetuses are especially vulnerable to the effects of burning fossil fuels — both climate change and air pollution — an evidence review in the New England Journal of Medicine found. A separate report from the Climate Impact Lab found the U.S. has the potential to save 7.4 million lives worldwide by the end of this century if it achieves net-zero climate pollution by 2050. (Children: The Hill, CNN; Lives saved: The Guardian)