In this Thursday, Aug. 2, 2012 photo, pear trees get emergency watering at the Chicago Botanic Garden in Glencoe, Ill. Many of the garden's 2.5 million plants have required extra watering during the ... more 
In this Thursday, Aug. 2, 2012 photo, pear trees get emergency watering at the Chicago Botanic Garden in Glencoe, Ill. Many of the garden's 2.5 million plants have required extra watering during the summer's triple-digit heat. (AP Photo/M. Spencer Green) less 
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Associated Press | Photo By M. Spencer Green
Sat, Aug 11, 2012 11:17 AM EDT