New reports show that Earth’s surface temperature last year was its highest since modern temperature record keeping began in 1880. The global record was also broken in 2014, although 2015 saw dramatic increases by comparison.

Scientists are forecasting that El Niño – a weather pattern that brings warmer than average temperatures to the U.S. – will likely develop later this year. We discuss what El Niño means for Chicago’s upcoming seasons with Paul Sirvatka, professor of meteorology at the College of DuPage. Read an interview.