and this Little Piggy went Wee Wee Wee, all the way home.
Q: Little Piggy’s home is in Wellington. Do you think it is better for Little Piggy to go there by car, plane or train?
A: Driving a petrol car, Little Piggy would put 127 Kg Carbon Dioxide* in to the atmosphere. That is a lot more than flying (71 kg**). Taking the bus would be better, (44 Kg***) and the train better again (25 Kg****).
But driving a battery electric vehicle is the best for cherishing our earth – only 15 Kg of carbon dioxide*****.
Something to remember when you think about buying a new electric vehicle – there is a lot of carbon embedded in the car before you drive it out of the showroom. How many kilometres of do you need to drive before the embedded carbon is recovered in savings per kilometre? This is called the carbon payback distance.
For a Nissan Leaf, that is 8,000 Km – less than a year’s driving for most of us. A Tesla however, has a carbon payback period of around 35,000 Km – perhaps 3 – 4 years of driving.
Based on MfE emissions factor (EF) data and:
* Road distance Auckland – Wellington is 639 km, EF (petrol) = 0.1984 KG CO2/Km
** Air distance Auckland – Wellington is 480 km, EF (petrol) = 0.1474 KG CO2/Km
*** Bus distance Auckland – Wellington is 666 km, EF (petrol) = 0.066 KG CO2/Km
**** Train distance Auckland – Wellington is 682 km, EF (petrol) = 0.036 KG CO2/Km
***** Road distance Auckland – Wellington is 639 km, EF (battery EV) = 0.024 KG CO2/Km
Q: What impact do the foods we eat have on our climate?
A: Plenty.And we need to do something about that.
The global average carbon footprint for beef is 26.6 Kg CO2/Kg beef. New Zealand’s pasture-based beef has a footprint less than half of this. Compare this to crayfish with a carbon footprint of 27.8 Kg CO2/Kg fish or sole at 20.8 Kg CO2/Kg fish.
By the time your beef gets to the kitchen bench, it’s carbon footprint is typically three times that of the production on farms.Making farmers accountable for all of beef’s off-farm emissions is not what a just transition needs to be about.
The solution is a localised food production system focused on organic, seasonal and fresh foods that include some meat but mainly vegetable.
Also, did you know that taking dairy out of our diet and replacing the minerals and nutrients with alternatives, results in the same or only slightly lowered carbon footprint?
Growing Your Own Food is something that each of us can do as a climate action.St Andrews Anglican Church have a community learning and demonstration garden and offer a Grow Your Own Food course for beginners.
Q: How fast should Little Piggy go when driving to the market?
A: No faster than 80 Km per hour.
For each one kilometre we travel at 10 kph below our open road speed limit (of 100 kph), we avoid dumping around 0.03 KG of CO2 emissions to the atmosphere.
That does not sound very much, but with 3.8 million light vehicles*** in the New Zealand fleet travelling at total of 22,208 million km at open road speeds***, that represents a total of 651 KT CO2/year, or around 4.4% of the transport sector emissions.Step the speed reduction up to 20kph, the emissions reductions would total 1,220 KT CO2/year which equates to around 8.2% of the transport emissions.
***data downloaded from NZ Ministry of Transport Jan 2019 The New Zealand 2017 Vehicle Fleet : Data Spreadsheet Version 4.0, September 2018