alan barreca study featured in mother jones

Image © Viviane Moos/Getty

Alan Barreca Study Featured in SB Dirty South Soccer: Sweltering Heat Means More Babies are Born Early Every Year

Alan Barreca and a colleague used estimate shifts in daily birth rates from United States counties over a 20-year span, a sample including 56 million births. “We estimate that birth rates increase by 5% on days with maximum temperatures about 90 degrees Fahrenheit.”