The United States is currently experiencing a severe heat wave with approximately 100 million people across 27 states under heat warnings or advisories. Temperatures are expected to soar into the upper 90s and 100s, with heat indices reaching up to 110 degrees in some areas, making it the most significant heat-related crisis this summer. The heat wave is attributed to human-caused climate change, which has increased the likelihood and intensity of extreme temperatures. As the heat dome expands, cities including Los Angeles, New York, Washington D.C., and Philadelphia are facing record-breaking temperatures. This extreme weather is also impacting regions outside the U.S., with fatal heat conditions reported in Europe and Mexico. Additionally, severe weather, including thunderstorms and potential tornadoes, is expected in parts of the Northeast and Midwest.