Why hot nights are emerging as one of summer's biggest health risks and what experts say is driving the shift

Overnight temperatures are rising faster than daytime highs. Here's why nighttime heat is becoming more dangerous.

Where to find portable ACs and fans still in stock – the only places you can buy cooling devices ASAP to see you through the heatwave

We've tracked down all the places you can still buy a portable AC, plus tips to keep you cool while you wait for delivery ...

Contributor: Night shifts are deadly, not just inconvenient

California's workplace safety systems are the perfect proving ground for policies that recognize the hazards of disrupting ...