text:  Many parts of the United States are in the grips of a massive heat wave in Nevada. Forecasters recorded triple-digit temperatures in several parts of the state. Yvette Fernandez from Nevada Public Radio reports an excessive heat warning is in effect through Wednesday night when Las Vegas could hit a record 118 degrees. Most of the state of Nevada is under a severe heat dome. Even Reno, the second largest city in the northern part of the state...