BOSTON (AP) - Urgent calls for electricity conservation helped avert possible blackouts in New England as an unseasonable heat wave blanketed the East. And Wednesday, temperatures were starting to ease. The National Weather Service forecast highs of only around 60 degrees in the Boston area Wednesday, a far cry from Tuesday's 92. The temperature hit 97 Tuesday in Newark, N.J. At least one death was blamed on the heat. A 62-year-old man was found dead Tuesday in his apartment in Pottstown, Pa.