humidity

Water vapor is typically scarce, and using indoor air to drive the hydration reaction can reduce the building's humidity to an uncomfortable level while the cold outside air contains limited moisture.

The Janus crystals capture humidity from humid air with the highest-to-date water collection efficiency.

Socioeconomic and environmental factors such as temperature, humidity and air pollution have been proposed as reasons for the increase.

Those high winds and low humidity rates prompted the weather service to issue a rare “particularly dangerous situation” red flag alert on Nov. 7, warning of “widespread, extreme fire weather conditions.”

"When it comes to urban heat resilience, humidity matters as much as temperature or shade provisions," Lee said.