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Know the signs of heat stroke and heat exhaustion as record-breaking temps grip the U.S.

Much of the U.S. is bracing for a scorching heat wave with record-breaking temperatures expected in at least 14 different states. In some areas, the heat has already proven deadly. Maryland officials say two people suffered heat-related deaths this week.  CBS News' Dr. Tara Narula told "CBS This Morning" that people should be on the lookout for a number of symptoms that signal heat-related illnesses like heat cramps, heat exhaustion and heat stroke.  In extreme heat, our body's protective control system can become overwhelmed, Narula explained, putting our core temperature at risk of climbing without any checks.  Read more....



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