WJLA ABC World News With Diane Sawyer March 22, 2012
good evening. across much of this country, the windows are open and the air conditioners are on tonight. forget spring. the thermometer says we're already in summer. as of tonight, look. nearly 5,000 heat records have been set this month. and look at detroit. it was 86 today. that's the hottest day in march ever. abc's steve osunsami is tracking the real economic consequences of this weather, including confused plants and animals going haywire. >> reporter: an early spring is one thing, but temperatures this high seem unbelievable. for this michigan apricot farmer, the heat is a huge...