Ok, so this does technically involve leaving the house but it was too good not to share. “We want to maximise fuel efficiency when we drive because that’s more economic and emits less CO2,” Celeste says. “A simple way we can improve our fuel economy from between 7 and 14 per cent is by following the speed limit when driving over 80 kms per hour.” Yes, even speeding a little can increase your emissions.    

“The other thing we can do is make sure our car tyres are properly inflated. Fuel efficiency decreases by 0.2 per cent for every one PSI (pounds per square inch) decrease. So basically by looking after our cars, we can actually reduce our CO2 emissions.” Or for a completely fossil fuel–free alternative, stick with the popular advice to ditch the car whenever possible and get on your bike.    

Look, we know leaving your TV plugged on at the wall and washing your clothes on a hot cycle isn’t the key contributor to the climate crisis (that title actually belongs to these guys). But reasons for reducing your carbon footprint extend beyond wanting to do more for the environment: “The most prevalent thing with reducing the resources you use is that you’re also saving money,” Celeste says. “It’s lighter on the planet and lighter on your wallet.”   

Editor's note: This piece was updated on 22 December 2021 following the sale of Powershop. An earlier version of this article listed them as a suggested energy provider. That recommendation has been changed to Diamond Energy and Cooperative Power.