It’s only July, but it has already been a long, hot spring and summer. The contiguous U.S. endured the warmest May ever recorded, and in June, the average temperature was 1.7 degrees Celsius (3.0 degrees Fahrenheit) above the 20th century average. Iowa, New Mexico and Texas set record highs for their minimum temperatures in June, and as of July 3, nearly 30 percent of the Lower 48 was experiencing drought conditions. And it’s not just the U.S. During the first five months of 2018, nearly every continent experienced record warm temperatures, and May 2018 marked the 401st consecutive month in which temperatures exceeded the 20th century average.
Climate change, in other words, is not a hypothetical future event — it’s here. We’re living it. And at a major science conference this month, some of the world’s leading climate scientists said it was changing our world in ways beyond what they’d anticipated.
“The red alert is on,” Laurent Fabius, who was president of the 2015 international climate change negotiations in Paris, told an audience last week at the EuroScience Open Forum, Europe’s largest interdisciplinary science meeting. As of 2015, global temperatures had risen about 1 degree Celsius above pre-industrial levels. “It’s a race against time,” Fabius said, and the political challenge is to avoid acting too late.