England, Kent, Sevenoaks, Fire and Rescue team on training exercise, breathing aparatus.

England, Kent, Sevenoaks, Fire and Rescue team on training exercise, breathing aparatus.

England, Hampshire, Environment, Burning stubble after harvest, now illegal practice.

Environment, Air, Pollution, City skyline with heavy smog in Santiago, Chile.

Environment, Pollution, Factory omitting plumes of smoke from chimneys in Santiago, Chile.

VO2 MAX Endurance Testing with female athlete wearing breathing equipment and running on a treadmill with a coach at her side.

Greece, Central, Athens, Cityscape and smog.

VO2 MAX Endurance Testing. Female athlete wearing breathing equipment and running on a treadmill with coach at her side