More than 150 million Americans are under the highest-level extreme heat alerts during a wave of above-average temperatures.

"A dangerous, widespread heat wave will bake the central and eastern U.S., bringing the hottest temperatures of the year and uncomfortably muggy air to the Midwest and Northeast that in some areas could last into much of next week,

Summer is officially here, and it's not wasting any time turning up the heat. "This would seem like a victory for the world and yet would produce $400 billion of annual revenue for US taxpayers." “You know,