The United States sweltered through its hottest July ever recorded last month, the National Oceanic and Atmospheric Administration confirmed Monday.
Denise Chow is a Science Reporter at NBC News. She covers a range of topics including the environment, climate change, and space, with a particular focus on extreme heat and its impact on human health. Denise's work has been featured in various outlets including Yahoo News, CNBC, and Telemundo Fresno.












