Atypical approach when designing HVAC systems for operating rooms (ORs) is to go to ASHRAE Standard 170 1 and identify what types of ORs are being designed (e.g., Class B, Class C). One would then ...

Some hot days feel even worse thanks to high humidity, trapped heat and dew points. Cities are especially vulnerable. By Nazaneen Ghaffar Nazaneen Ghaffar is a reporter on The Times’s weather team. It ...