Sea levels. The world is holding its breath after new research reports that oxygen in the ocean has fallen by two per cent in the past 50 years.

6 x Oxygen. Scientists believe that oxygen was formed during the birth and development of the stars after the Big Bang… Take a breath and exhale!

Tips for upgrading hotel air. How do you get the best air quality when staying at hotels in some of the world’s greatest cities? Daniel Uusitalo, business development manager at Blueair, clocks up 120 travel days a year and has picked up a few tips along the way.

Five game changers. Dutch designer Daan Roosegaarde has come up with a gem of an idea: air-purifying towers that subject the carbon in smog to such enormous pressure that it is converted into diamonds.

Blowin’ in the wind. Artist JANET ECHELMAN goes with the flow.

Eight air heroes. Individuals who never lose sight of the fact that nothing is more important than the air we breathe.