A spike in hospitalizations for a dangerous low-salt condition is the latest in a growing list of health threats linked to climate change. An average global temperature increase of 3.6 degrees Fahrenheit could lead to a 14% increase in hospitalizations for critically low sodium levels in the blood, a condition called hyponatremia, according to a Swedish study. Hyponatremia cases increase in the summer months, but the impact of warming temperatures due to climate change was unclear. To learn more, researchers at the Karolinska Institute in Solna, Sweden, analyzed nine years of data on Swedish adults and identified more than 11,000...