A gas humidification apparatus (1) comprising: an inlet (12); a humidification device in fluid communication with said inlet (12), said humidification device comprising: a humidification material (24) that readily absorbs moisture and readily releases moisture when exposed to a dry environment, wherein said humidification material (24) has a configuration that generates turbulence in a gas as it passes over a surface of said humidification material (24); and an outlet (28) in fluid communication with said humidification device.