Drought tightens grip on Midwest 2012

Drought USAs water recedes, the bottom of Celery Bog continues to crack and dry out Wednesday, July 11, 2012,in West Lafayette, Ind. Large areas of the bog that are normally covered with water now give way to a variety of thick weeds. Not much can be done to raise the Celery Bog's water level. So naturalists are trying to learn from the effects of the statewide drought, which has caused much of the West Lafayette wetland to evaporate PHOTOS