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Algae energiser
When Sofie Allert was growing up in Skövde, a small town in southern Sweden, her dad worked liming lakes. It gave her an early insight into the environmental damage that industry can wreak. “...

Sky walker
One foot forward, and then another. It’s not so strange that those first tentative steps we took as children were heartily applauded by our parents. Being able to go outside regularly and walk in the...

Sea levels
Did you think that oxygen was permanent and something you could take for granted? Take a deep breath and think again.
Researchers now believe that global warming is one reason why oxygen is...

6 x Oxygen
1. Everybody is a star
Look up at the sky at night. Try to get far away from the lights of the city, where the stars and their constellations can really twinkle in the darkness. Then consider these...

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...

Five game changers
1. Diamonds in the sky
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...
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