 Some 100 million people are under heat advisories from New York to Florida to Texas. Meanwhile, Washington, D.C., Baltimore, Philadelphia, and much of eastern North Carolina and southeast Virginia are under excessive heat warnings, with temperatures expected to rise to some 100 degrees Fahrenheit. On the West Coast, the blistering heat has intensified wildfires across Oregon, where at least eight blazes are burning. Oregon's largest blaze, the Cow Valley Fire,