Why did we make version 1?
Version 0 of the flashcards was made for the Bluedot Festival 2018 led by Sara Summerton and Joe Fennell. We got a lot of interest, and were delighted that Lucy Yates got a set printed for the LEAP 2018 conference. We wanted to revise the numbers and improve the selection of foods to make the numbers more reliable. Ahead of the Royal Society Summer Science Exhibition 2019 we started a collaboration with Rosie Green to add water footprint information to the cards.
Download your set now
Our goal is to make tools that you can download and use for free. We are grateful for your no-strings-attached support so that we can continue to provide unbiased information based on the academic consensus. Download the free pdf of the card fronts (or 8 cards per sheet here) and here is our sponsor information for the card backs - we would be grateful if you would print at least one of these out if you use the cards, thank you. We would really like to hear how you got on using the cards, especially if you use them at public events - your feedback helps us to improve the cards and get money to develop the cards further - thank you!
More information specific to version 1 of the cards
- Cars vary in their emissions per mile. For climate food flashcards version 1, we assumed a very efficient 80 g CO2e / km, but note that the average US car emits 250 g CO2e / km, which would make all the car time numbers lower by a factor 80/250 ~ 0.3.
- Car times assume the car is driving at 30 mph. For a car driving at 60 mph the car time values would be halved.
- For extreme enthusiasts and data geeks you can see the full information used to make the cards here.
- Please also note the general health warnings for the flashcards on our main climate food flashcards page.
Known bugs (please send us more as you spot them!):
- For future versions it might be better to use a higher number for the g CO2e / km for the cars e.g. for the Royal Society Summer Science Exhibition press release we used 154 which was relevant for a typical UK family car. This would reduce all the car time numbers by 80/154 ~ half.
- It isn't clear which categories are impacts and which are content of the food. (Carbon and water are impacts and calories, protein and fiber are content of the foods. Some people mistakenly think water is a content of the food - which is understandable given that it comes after calories, protein, fiber.) For the next version we could put a little picture of a footprint next to carbon and water - or please let us know your ideas, thanks!
- Let us know if you're puzzled by any of the numbers so we can spot any more bugs and note them here - and fix them for v2!
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